TASK DEFINITION: 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.
PROBLEM: Sentence 1: He told the jury Stubbs is a "cold, calculating killer." Sentence 2: District Attorney Dave Lupas reminded jurors that Stubbs is, "a cold, calculating killer".

SOLUTION: 3

PROBLEM: Sentence 1: Residents return to Texas blast site Sentence 2: Residents return to Fallujah

SOLUTION: 0

PROBLEM: Sentence 1: Two boys on a couch are playing video games. Sentence 2: Two boys are playing a video game.

SOLUTION:
4