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.

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.
3

Sentence 1: He gave a surprisingly impassioned speech to the United Steelworkers of America, who announced their endorsement yesterday. Sentence 2: On Tuesday, he picked up the endorsement of the United Steelworkers of America.
2

Sentence 1: In the year-ago quarter, the steelmaker recorded a profit of $16.2 million, or 15 cents per share, on sales of $1.14 billion. Sentence 2: In the second quarter last year, AK Steel reported a profit of $16.2 million, or 15 cents a share.

3

