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 dog is running along the grass. Sentence 2: A brown dog is running in the grass.
[EX A]: 4

[EX Q]: Sentence 1: A black and brown dog runs through the woods. Sentence 2: A dog running through the woods.
[EX A]: 4

[EX Q]: Sentence 1: A key figure in former state Treasurer Paul Silvester's bribery scheme was accused Wednesday of changing his story about Silvester's alleged corrupt dealings with a Boston investment firm. Sentence 2: A key player in former state Treasurer Paul Silvester's corruption scheme testified on Tuesday about kickbacks and bribes Silvester traded for state business.
[EX A]:
2