One of the dependencies that, when found in the summary but not in the article, indicates a possible error is the "amod" (adjectival modifier) dependency.
Applied to this summary, we have "Democratic" as the entity, and it is the adjectival modifier of the word "member".
And indeed, this unmatched dependency indicates an actual error here. The sentence is not factual for two reasons.
First, the article talks about "democrats" and "members of the committee", which are two separate things. The summary combines those two in a way
that can be seen as not completely factual. Second, the statement itself was not made by a democrat (nor a member of the committee), and even though the dependency can't be
directly linked to this error, empirical results showed that unmatched *amod* dependencies often suggest
that the summary sentence is incorrect.