For narrow domains, syntactic categories can be replaced by
semantic categories
MANIPULATION-COMMAND -> MANIPULATE OBJECT (INSTRUMENTAL)
INSTRUMENTAL -> with TOOL
TOOL -> (a | the) SCREWDRIVER
The semantic analyis may simply be the tree that the parser produces.
Phrasal Parsers
Related linguistic theory: Construction Grammar (Fillmore, etc.),
the idea that much of linguistic knowledge is incorporated
in patterns of varying specificity, each with its own
characteristic syntax, semantics, and pragmatics
the COMPARATIVE ... the COMPARATIVE ...
VERB ONE'S way MOTION-PP
Analysis as partial parsing (noun and verb groups) followed by
template matching
One use of phrasal parsing takes templates directly to slots in
schemas (frames)
take HUMAN hostage -> (TERRORIST-INCIDENT HUMAN-TARGET)