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.

Sentence 1: 20-member parliamentary, trade team leaves for India Sentence 2: Commerce secretary to take leave of absence
0

Sentence 1: The man is riding a bike down a dirt hill. Sentence 2: A trick bicyclist grinds down a handrail.
2

Sentence 1: Germany Likely to Press Russia on Syrian Crisis Sentence 2: What is Russia thinking on Syria? A brief guide

1