private boolean getKeywordsInSentence(String sen, Integer index) {
		boolean found = false;
		boolean found_temp = false;
		if(this.keyphases == null) {
			return found;
		}
		Iterator<String> it = this.keyphases.iterator();
		while (it.hasNext()) {
			String s = it.next();
			if(s.indexOf("/") != -1) {
				String[] keyword = s.split("/");
				found_temp = true;
				for(int i=0; i<keyword.length; i++) {
					if(sen.indexOf(keyword[i]) == -1) {
						found_temp = false;
					}
				}
			}
			else
			{
				if(sen.indexOf(s) != -1) {
					found_temp = true;						
				}
			}
			
			if(found_temp) {
				found = true;
				if (!keywordExtracted.containsKey(s)) {
					KeywordInfo ki = new KeywordInfo();
					keywordExtracted.put(s, ki);
				}				
				if(!keywordExtracted.get(s).indexOfSentence.contains(index)) {
					keywordExtracted.get(s).num++;
					keywordExtracted.get(s).indexOfSentence.add(index);
				}
			}
		}
		return found;
	}