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.

Sentence 1: A total of 17 cases have been confirmed in the southern city of Basra, the Organization said. Sentence 2: A total of 17 confirmed cases of cholera were reported yesterday by the World Health Organisation in the southern Iraqi city of Basra.
4

Sentence 1: The SIA says the DRAM market is expected to grow 2.9 percent to $15.7 billion in 2003 and 43 percent to $22.5 billion in 2004. Sentence 2: The Americas market will decline 2.1 percent to $30.6 billion in 2003, and then grow 15.7 percent to $35.4 billion in 2004.
1

Sentence 1: The man is peeling an apple. Sentence 2: A man peels an apple.

5