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: Two brunette girls sit atop a red an yellow motorcycle with a side car. Sentence 2: A couple posing on a red and yellow motorcycle.
3

Sentence 1: Then he is not omnipotent. Sentence 2: Then he is malevolent.
1

Sentence 1: a close up of a small cactus in a pot. Sentence 2: a close up of a woman holding a white puppy.

1