Annotating Static Verbs
Consider the following sentence (relevant UD edges shown):
Dependency graph for sentence: Kim owns a house.
Here, we say that the (verbal) predicate owns evokes the POSSESSION frame,
which defines the possessum and possessor roles. The possessum roles is
filled by a house and the possessor roles is filled by Kim. So we
annotate as follows:
Dependency graph for sentence: Kim owns a house. Token owns is labeled POSSESSION and has an edge labeled possessor to token Kim and an edge labeled possessum to token house.
We call the arguments that fill the predicate’s frame’s roles the core arguments. We will turn to non-core arguments later.
Note that semantic roles abstract away from syntactic alternation. As an example, consider the following passive sentences and its Superframes annotation:
Dependency graph for sentence: The house is owned by Kim.
Dependency graph for sentence: The house is owned by Kim. Token owned is labeled POSSESSION and has an edge labeled possessum to token house and an edge labeled possessor to token Kim.
Note also that there are only a few dozen superframes, so the meaning they specify is necessarily coarse. Different predicates with similar meaning can invoke the same superframe. This is a feature, as it makes explicit similar predicates and roles.
Dependency graph for sentence: The house belongs to Kim. Token belongs is labeled POSSESSION and has an edge labeled possessum to token house and an edge labeled possessor to token Kim.
Verbs with One Argument
There are, of course, also predicates with only one argument, in which case only one of the two roles is used (most often the first one).
Dependency graph for sentence: Kim is sleeping. Token sleeping is labeled INTERNAL-STATE and has an edge labeled has-state to token Kim.
INTERNAL-STATE is one of those superframes whose second role state is
rarely filled by an argument. It denotes an abstract entity (here: the state of
being asleep) that is already expressed by the predicate.
Verbs with Zero Arguments
It also happens that predicates occur with no core arguments. One example is
weather verbs such as rain. For consistency, there is a rule that says
predicates with no core arguments must always be annotated with the most
general superframe ENTITY. So that is what happens for example for weather
verbs such as rain (which has a syntactic, but semantically empty argument):
Dependency graph for sentence: It is raining. Token raining is labeled ENTITY and has an edge labeled NONCOMP to token It.
We will turn to what NONCOMP means later.