Some comparatives aren't normalized

[kkasunperera]

In current RelEx output some of the comparatives get normalized, and some are not.
This issue is also discussed here #123
e.g. New York is much bigger than Boston. In RelEx relation output bigger should be normalized on the "big" i.e. _comparative(big, New_York)

also "He is a better player than Ronaldo." "better" should get normalized to "good"

In the #123 discussion this was identified as a bug in RelEx but not a bug in Wordnet.