Definition: Evaluate the similarity between them and classify them into classes from 0-5 as follows:
0 : The two sentences are completely dissimilar.
1 : The two sentences are not equivalent, but are on the same topic.
2 : The two sentences are not equivalent, but share some details.
3 : The two sentences are roughly equivalent, but some important information differs/missing.
4 : The two sentences are mostly equivalent, but some unimportant details differ.
5 : The two sentences are completely equivalent, as they mean the same thing.
Input: Sentence 1: The broad Standard & Poor's 500-stock index was up 4.83 points or 0.49 per cent to 980.76. Sentence 2: Standard & Poor's 500 stock index futures declined 4.40 points to 983.50, while Nasdaq futures fell 6.5 points to 1,206.50.
