// }
// java.util.Collections.sort(sysSpans, new SpanOffsetComparator());
// }
private int sentDist (JCas jcas, Markable m1, Markable m2) {
PairAttributeCalculator ac = new PairAttributeCalculator(jcas, m1, m2);
ac.setStopWordsList(stopwords);
return ac.getSentenceDistance();
}