PARSE tags the noun tokens in each listing as either head nouns or modifiers.
pARSE first assesses if a listing is "hard" to parse (line 10) based on two criteria -(1) the listing contains a long sequence of nouns (seven words or longer in our system) without any prepositions (e.g., worth shutout series 12" womens fastpitch softball fielders glove s0120 lefty); and (2) the majority of these nouns do not appear in mc words and attrs (e.g., over 70% in our system).