GatorDSR code for TAC 2014 KBP Event Argument Extraction
https://github.com/rgabbard-bbn/kbp-2014-event-arguments
https://docs.google.com/document/d/1NRrRciiPMEZfqdjXEljyzWn-Zlw-jEm0PBqT-t1owJ0/edit
https://docs.google.com/file/d/0Bxdmkxb6KWZnV0wwcU14cFBsTjQ/edit
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expand an NN to multiple consecutive words of the same POS tag or NER tag
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generalize to hierarchical POS tags: e.g. VB or past verb or NN or NNS or the tags that are semantically similar
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Take a look at Semantic role labeling and Daniel Gildea and Daniel Jurafsky's paper Automatic Labeling of Semantic Roles