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 slipping in the water-tub. Sentence 2: A woman is lying in a raft.
1

Sentence 1: Clinton lands in India to breathe life into ties Sentence 2: Clinton Warns Against Undermining Grameen Bank
1

Sentence 1: A dog licks up a baby's drool. Sentence 2: A dog licks a baby.

2