@SuppressWarnings("unchecked")
	@Override
	public double getScore(Object userAnswer) {
		if (userAnswer == null)
			return 0;
		String ans = (String) userAnswer;
		ArrayList<String> trueAns = (ArrayList<String>) answer;
		for (int i = 0; i < trueAns.size(); i++) {
			if (trueAns.get(i).equals(ans))
				return score;
		}		
		return 0;
	}