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 three-judge panel of the 11th U.S. Circuit Court of Appeals ruled late Friday that the small size, limited use and secular purpose make the image legitimate. Sentence 2: A three-judge panel of the 8th U.S. Circuit Court of Appeals in St. Louis overturned a ruling issued last year that supported the ordinance.

SOLUTION: 3

PROBLEM: Sentence 1: Algerian priest to lecture about Christian heritage in N. Africa Sentence 2: Telstra applies to list China site in NY

SOLUTION: 0

PROBLEM: Sentence 1: Butter is melting in a pan. Sentence 2: A man is melting butter in a pan.

SOLUTION:
4