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.
--------
Question: Sentence 1: US Cannot 'Conclusively Determine' Chemical Weapons Use in Syria Sentence 2: U.S. Sees No Conclusive Evidence of Chemical Arms Use by Syria

Answer: 5


Question: Sentence 1: So YES, we DO read the bible to learn about Christianity. Sentence 2: personally i would read the bible to learn about christianity.

Answer: 3


Question: Sentence 1: March  is also the date for the uprising in CHINA. Sentence 2: Originally posted by Vitchilo March  is also the date for the uprising in CHINA.

Answer:
4