an argument of the predicate "efficient".  This is because, for
example, we represent the relation between "parser" and "efficient" in
the sentence "An HPSG parser is efficient" as the same
predicate-argument relations.

<p>
When the parsing of the whole sentence fails, fragmental parse results
are output.  In this case, multiple "ROOT" lines are output because a
ROOT line is output for each fragmental parse result.  Note that
predicate-argument relations do not necessarily form a connected
graph.

<p>
If p