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: Close-up of a hummingbird. Sentence 2: A closeup of a hummingbird flying.
[EX A]: 4

[EX Q]: Sentence 1: The onus is on the manufacturer of a product to convince consumers it is safe. Sentence 2: The manufacturer has to convince the government it's safe.
[EX A]: 3

[EX Q]: Sentence 1: In the year-ago quarter, the steelmaker recorded a profit of $16.2 million, or 15 cents per share, on sales of $1.14 billion. Sentence 2: In the second quarter last year, AK Steel reported a profit of $16.2 million, or 15 cents a share.
[EX A]:
3