Modified hypernym criteria to deal with polysemy
	new file:   output/unkn.txt
	new file:   output/xy.txt
	new file:   output/yx.txt
	new file:   output/zz.txt
	modified:   src/main/java/DirtRuleFromAgiga.java
	modified:   src/main/scala/edu/jhu/hyperclass/WordNet.scala