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.

[EX Q]: Sentence 1: Fallen US firefighters brought home Sentence 2: Wall Street ends slightly lower
[EX A]: 0

[EX Q]: Sentence 1: Passed in 1999 but never put into effect, the law would have made it illegal for bar and restaurant patrons to light up. Sentence 2: Passed in 1999 but never put into effect, the smoking law would have prevented bar and restaurant patrons from lighting up, but exempted private clubs from the regulation.
[EX A]: 3

[EX Q]: Sentence 1: my final word: ignoring has the effect of normalizing. Sentence 2: taking advantage has the effect of reinforcing.
[EX A]:
0