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.
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Question: Sentence 1: Cristiano Ronaldo hat-trick fires Portugal to 2014 World Cup finals Sentence 2: Ronaldo hat-trick fires Portugal to World Cup

Answer: 5


Question: 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.

Answer: 3


Question: Sentence 1: Snowden sees 'no chance' for US fair trial Sentence 2: Snowden sees "no chance" to get fair trial in U.S.

Answer:
5