the parser is mistagging quotes (both single and double) with the default English model. I notice most on opening quotes but it happens to closing quotes.
ex. (TOP (NP (NP-S-NP (NN "))(ADVP-C-NP (RB Here))(. ?)(. "))) both double quotes should be labeled ''(two single quotes).
same sentence labeled with the part of speech tagger using the default English model: "_`` Here_RB ?. "_''