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 woman rides a horse. Sentence 2: A woman is riding a horse.

SOLUTION: 5

PROBLEM: Sentence 1: A women sitting in a chair at Christmas holding make up. Sentence 2: A train sitting on the tracks in a train yard.

SOLUTION: 0

PROBLEM: Sentence 1: Why was the Book of Thomas left out of the canon? Sentence 2: Why would the addition of more of Jesus words be left out of the canon?

SOLUTION:
3