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: Two brown dogs running together on sand Sentence 2: Two brown dogs are running on the sand.

SOLUTION: 5

PROBLEM: Sentence 1: The man is riding a horse. Sentence 2: A man is riding on a horse.

SOLUTION: 5

PROBLEM: Sentence 1: Gusmao consolidates power in East Timor elections Sentence 2: Supreme Court possibilities if Romney wins election

SOLUTION:
0