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: A bird holding on to a metal gate. Sentence 2: A multi-colored bird clings to a wire fence.
[EX A]: 3

[EX Q]: Sentence 1: Thai opposition protesters begin Bangkok shutdown Sentence 2: Thai protesters launch Bangkok 'shutdown'
[EX A]: 5

[EX Q]: Sentence 1: the iranian government has dismissed the allegations in the intelligence presented to the international atomic energy agency board as baseless and the intelligence used to support the allegations as fake. Sentence 2: the international atomic energy agency insists that the iranian government's simple denials of the intelligence presented to the international atomic energy agency board are not good enough to allay western countries suspicions.
[EX A]:
2