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 woman is cutting a leak. Sentence 2: A woman is slicing a leek.
4

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.
1

Sentence 1: A woman boils eggs. Sentence 2: A woman places two eggs into a pot of water.

3