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.

Input: Consider Input: Sentence 1: Umm the California was a cargo ship I dont care what the article says. Sentence 2: The California was a cargo ship.

Output: 4


Input: Consider Input: Sentence 1: united states officials do not know how far north korea's nuclear weapons program has progressed. Sentence 2: hill is the head american negotiator on north korea's nuclear weapons program.

Output: 1


Input: Consider Input: Sentence 1: Mr Colpin did not specify whether it was this system that was at the centre of the investigation. Sentence 2: Neither OLAF nor the Belgian prosecutors have specified if it was this system that was at the centre of the investigation.


Output: 2