Inverse predicates and better dependency analysis

• Improve the triples with inverse predicates
• Less dependency analysis rules + better analysis
• Reorganisation of the files + modification of DependenciesTree class
• Update to the latest version of CoreNLP (2015-01-30)

Better nounification

Use a precomputed map to "nounify" the verbs (e.g. transform "born" into "birth").

Two different maps:

• one more precise, filled manually, for the verbs occuring the most in questions
• one more general, filled automatically, for all the verbs

New datamodel

Handle the new datamodel:

• SORT, FIRST and LAST connectors
• UNION and INTERSECTION connectors

Complete rewriting of the algorithm to produce triples from the dependencies tree.

Nounification

• Verbs are transformed in nouns, e.g. die become death and write become writer.

Wikidata friendliness

• Lemmatization of words.
• New triple production rules.