code: public char match(ISense source, ISense target) throws MatcherLibraryException {
          List<ISense> sourceList = getAncestors(source, depth);
          List<ISense> targetList = getAncestors(target, depth);
          targetList.retainAll(sourceList);
          if (targetList.size() > 0)
              return IMappingElement.EQUIVALENCE;
          else
              return IMappingElement.IDK;
      }
docs: Matches two strings with WNHeirarchy matcher.
  
  @param source gloss of source label
  @param target gloss of target label
  @return synonym or IDk relation