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.

Q: Sentence 1: the international atomic energy agency may have been tricked because it was eager for a deal. Sentence 2: the international atomic energy agency plan draws out negotiations for many months.

A: 2
****
Q: Sentence 1: Clinton ready to fight for Obama Sentence 2: Clinton a tough act for Obama to follow

A: 1
****
Q: Sentence 1: A blue motorcycle is parked on the sidewalk. Sentence 2: A blue moped parked on the sidewalk.

A:
4
****