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: A baby monkey scratches itself. Sentence 2: The monkey scratched his tummy.

SOLUTION: 3

PROBLEM: Sentence 1: myanmar government has stated myanmar will become opium-free by 2014. Sentence 2: myanmar government stated myanmar is on track to be drug-free by 2014.

SOLUTION: 5

PROBLEM: Sentence 1: Moore had no immediate comment Tuesday. Sentence 2: Moore did not have an immediate response Tuesday.

SOLUTION:
5