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.

Ex Input:
Sentence 1: Shares of USA Interactive rose $2.28, or 7 percent, to $34.96 on Friday in Nasdaq Stock Market composite trading and have gained 53 percent this year. Sentence 2: Shares of LendingTree rose $6.03, or 41 percent, to close at $20.72 on the Nasdaq stock market yesterday.

Ex Output:
1


Ex Input:
Sentence 1: A boy is crawling into a dog house. Sentence 2: A cat is playing on the floor.

Ex Output:
0


Ex Input:
Sentence 1: Iran's Rouhani warns of Talibanisation in Syria Sentence 2: Russia, China Concerned About Israeli Airstrikes in Syria

Ex Output:

1