public Vector getVectorBetween(String word, long start, long endTime) {
        SemanticVector v = wordToMeaning.get(word);
        return (v == null) ? null : v.getVectorBetween(start, endTime);
    }
public Vector getVectorBetween ( String word , long start , long endTime ) { SemanticVector v = wordToMeaning . get ( word ) ; return ( v == null ) ? null : v . getVectorBetween ( start , endTime ) ; }
{@inheritDoc}