def __init__(self, word, items=[]):
if items:<EOL><INDENT>dict.__init__(self, items)<EOL><DEDENT>self.word = word<EOL>
A dictionary of custom word tags.
            A word may be annotated with its part-of-speech tag (e.g., "cat/NN"), 
            phrase tag (e.g., "cat/NN/NP"), the prepositional noun phrase it is part of etc.
            An example of an extra custom slot is its semantic type, 
            e.g., gene type, topic, and so on: "cat/NN/NP/genus_felis"