添加查询单个词的情况，任意两个单词之间无值
Merge branch 'master' of https://github.com/klisly/ontology

Conflicts:
	QAOntologyLibrary/logs/ontology.log
	QAOntologyLibrary/src/cn/vcg/qa/ontolog/SemanticEngine.java
	QAOntologyLibrary/src/cn/vcg/qa/ontolog/entity/OntoQuery.java
	QAOntologyLibrary/src/cn/vcg/qa/ontolog/nlpinterpreter/SingleWordNLPQueryInterpretor.java
	QAOntologyLibrary/src/cn/vcg/qa/ontolog/nlpinterpreter/package-info.java