public questionAnswer()
{
subjectList = new List<LexiconLiteral>();
subjectUriList = new Dictionary<string, string>();
subjectLabelList = new Dictionary<string, string>();
predicateList = new List<LexiconPredicate>();
predicateUriList = new Dictionary<string, string>();
predicateLabelList = new Dictionary<string, string>();
objectNodetList = new List<INode>();
objectUriList = new List<string>();
objectLabelList = new List<string>();
}