Case Roles and Circumstantial Roles for Predicates

A tentative list of case roles and circumstantial roles for use in TMR writing. Definitions and examples are given to provide a common starting point. Both case roles and circumstantial roles would be defined as properties (specifically, as relations) in the ontology.

Case Roles: The arguments or typical roles that a predicate can take; they will appear as properties of events in the TMR.

1. Agent - the entity that causes or is responsible for an action. (the subject in a transitive sentence is often, but not always, the agent)

Kathy [agent] ran to the store [destination].

Joey [agent] ate the cookie [theme].

Du Pont Co. [agent] said it agreed to form a joint venture in gas separation technology with L'Air Liquide S.A., an industrial gas company based in Paris.

2. Theme - the entity whose state or location is being described, or whose state is affected by an action (direct object of an action; subject in an intransitive sentence).

John [agent] kicked the ball [theme].

The price [theme] is high.

The ball [theme] rolled down the hill [path].

Bridgestone Sports Co. has set up a company [theme] in Taiwan with a local concern and a Japanese trading house.

3. Experiencer - the entity that undergoes psychological experience (perception, cognition); (e.g., passive role in involuntary perceptual event)

I [experiencer] realized that . . .

John [experiencer] heard the music [theme]. (vs. John [agent] listened to the music [theme].

However, recently the natural rubber market [experiencer] has experienced a slump and is at 60 percent of production capacity.

4. Beneficiary - the entity that benefits from an action

I [agent] did it [theme] for Mary [beneficiary].

Cindy [agent] lent me [beneficiary? or destination?] some money [theme].

The venture, which is contingent on a definitive agreement, intends to develop, manufacture and market equipment based on polymeric membrane technology and in some instances perform the gas separation for customers [beneficiary].

Issue: Should beneficiary be used only as a "circumstantial" role, leaving source and destination to handle verbs of transfer (give to, buy from, etc.). See more examples under 6 and 7 below.

5. Source - conceptual places where various types of movement and transfer start (used for direction in verbs of motion)

The goods [theme] will be shipped from Japan [source].

Susan [agent] bought the book from Jane [source].

BROKEN HILL PROPRIETARY CO., Australia's biggest company, said it soon will receive 133 million Australian dollars ($94.7 million) from the sale [source] of domestic assets.

7. Destination - an endpoint for actions & processes involving change of location, transfer.

John [agent] took his mother [theme] to the theater [destination].

Jill [agent] went to the store [destination].

Cindy [agent] brought the money to me [destination]

Hilda [agent] gave John [destination] a present [theme].

Bridgestone Sports Co. said Friday it has set up a joint venture in Taiwan with a local concern and a Japanese trading house to produce golf clubs to be shipped to Japan [destination].

Issue: For verbs of transfer (buy, sell, give, take, exchange, lend, borrow, etc.), other roles are sometimes used, such as beneficiary, or recipient. I suggest that source/destination can be used to cover verbs of transfer as well as verbs of motion. Note that "Hilda" may also be regarded as a source, as well as an agent. I prefer to ignore this conflation, but it may be relevant for languages other than English.

8. Location - the place where an event takes place or where an object exists.

The milk [theme] is in the refrigerator [location].

The play [theme] will be performed at the Shakespeare Theater [location].

Kawasaki Steel intends to secure a stable supply of ferrosilicon by producing the material in Brazil [location] where power rate is less than one-third of that of Japan [location].

Note: Location can be both a case role and a circumstantial role, in that any event can take place at a location and at a time. However, some predicates require that a location be expressed, as in the first example above.

9. Path - the route along which an entity (i.e., a theme) travels

Mary [agent/theme] ran down the hill [path].

The train [theme] traveled along the track [path].

The plane [theme] took the polar route [path] from Korea [source] to Chicago [destination].

Issue: Role conflation: "Mary" is both the agent and the theme of "ran".

10. Co-theme - an entity whose state is described in relation to another.

John [theme] is a lawyer [co-theme].

Co-theme is used together with theme to represent events such as: `designate X as Y', `christen X as Y', `name X as Y', `mark X as Y', `sell X as Y', `pronounce X as Y', `dub X as Y', and `elect X as Y'.

11. Accompanier - an entity which joins the agent in the event, but is not the initiator of the event.

John [agent] went with Mary [accompanier].

Kawasaki Steel Corp. has agreed with Mitsubishi Corp.[accompanier] and Cia Vale Do Rio Doce [accompanier], Brazil's state-run mining corporation, to set up a joint venture in Minas Gerais State in Brazil possibly this summer to produce ferrosilicon, reported Nikkan Kogyo. 12. Degree - the extent to which something occurs or is done.

The development of joint products [theme] by the nonlife insurance industry and the securities companies [agents] is expanding a step [degree].

13. Purpose - a goal; the reason for which something is done.

Nomura Shoken and Credit 109 [agents] have tied up to issue the "Nomura Tokyu Top Card" [purpose].

Dresser Industries Inc. and Komatsu Ltd. of Japan said they signed a memorandum of understanding *to join their construction equipment businesses in North, Central and South America* [purpose].

14. Means - the method or way in which something is accomplished.
Armco [agent] will establish a new company [theme] by spinning off its general steel department [means].

The venture, which is contingent on a definitive agreement, intends to develop, manufacture and market equipment based on polymeric membrane technology and in some instances perform the gas separation for customers [beneficiary].

15. Manner - the style in which something is done.
Fujitsu and Telecom [agents] will jointly [manner] set up Information Switching

Technology [theme].

Circumstantial Roles:

Roles which relate events to more circumstantial pieces of information that describe them, such as location, time, etc. These roles will also appear as properties of events in the TMR. Here is a tentative list:

1. Location (see above, under case roles, no. 8)

2. Time - the time at which an event takes place

John [agent] ate dinner at five o'clock [time].

Bridgestone Sports Co. said Friday [time] it has set up a joint venture in Taiwan with a local concern and a Japanese trading house to produce golf clubs to be shipped to Japan.

Other tentative circumstantial roles that have been suggested in previous work are listed below.

For now, I just list them, but we need to define/refine them as examples arise:

condition, cause, effect, result

mode

quantity, quality