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: ALTHOUGH SATELLITE INTENSITY ESTIMATES FROM TAFB AND SAB ARE ONLY T./ Sentence 2: SUBJECTIVE DVORAK INTENSITY ESTIMATES FROM TAFB AND SAB INCREASED TO  KT.
[EX A]: 2

[EX Q]: Sentence 1: Yahoo agrees to buy Tumblr for $1.1 billion cash Sentence 2: Yahoo to Buy Tumblr for $1.1 Billion
[EX A]: 5

[EX Q]: Sentence 1: They know that the video doesn't show a gas chamber. Sentence 2: The bottom line is that the video clip doesn't show a gas chamber.
[EX A]:
5