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: Suspected Saudi militant dies in Lebanese custody Sentence 2: Suspected US drone kills 6 militants in Yemen
[EX A]: 0

[EX Q]: Sentence 1: A black and brown dog walks through the snow near a building. Sentence 2: An older man stands outside a old boarded up building.
[EX A]: 1

[EX Q]: Sentence 1: CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT  HOURS. Sentence 2: TROPICAL CYCLONE FORMATION IS NOT EXPECTED.
[EX A]:
3