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.

Example Input: Sentence 1: At least Mexico had a presence in California. Sentence 2: Mexico has ZERO claim to California.
Example Output: 1

Example Input: Sentence 1: Man arrested over double murder Sentence 2: WA man arrested in police drug raid
Example Output: 1

Example Input: Sentence 1: A girl with a black purse sitting on a wooden bench. Sentence 2: A young woman with a black purse sits on a wooden bench.
Example Output:
5