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 animal is eating. Sentence 2: The animal is hopping.

SOLUTION: 0

PROBLEM: Sentence 1: A silver bicycle is parked in a living room. Sentence 2: A bicycle in a dining room.

SOLUTION: 2

PROBLEM: Sentence 1: The man is standing on the shore hitting a ball with a paddle. Sentence 2: Two teenage girls are standing on beside the beach listening to ipods.

SOLUTION:
1