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: My niece is married to a black man. Sentence 2: My great niece is half black.

SOLUTION: 1

PROBLEM: Sentence 1: A brown dog is in the middle of a line of dogs chasing a dirty tennis ball over dirt. Sentence 2: There are two white dogs and one brown dog chasing a ball.

SOLUTION: 3

PROBLEM: Sentence 1: We're talking about angels and common pins again, right? Sentence 2: @Lustig Andrei, We're talking about angels and common pins again, right?

SOLUTION:
5