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: Let's let this play out in court. Sentence 2: Nothing is stopping this thing from playing out in court.

SOLUTION: 4

PROBLEM: Sentence 1: Ha, ha, ha, ha, ha, ha! Sentence 2: Ah ha, ha, ha, ha, ha!

SOLUTION: 5

PROBLEM: Sentence 1: The national denomination of the Episcopal Church, with 2.3 million members, is the U.S. branch of the 77 million-member Anglican Communion. Sentence 2: The Episcopal Church, with 2.3 million members, is the American branch of the worldwide Anglican Communion, which has 77 million adherents.

SOLUTION:
5