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: A television in a messy room with several bookcases. Sentence 2: A room with a television, stereo and bookshelf.
3

Sentence 1: A man is cutting tomatoes into pieces. Sentence 2: A woman is cutting some vegetables.
2

Sentence 1: PCB appoints Waqar Younis as head coach Sentence 2: Waqar Younis back as Pakistan coach

5