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.

Q: Sentence 1: Smiling man with reflective classes. Sentence 2: A gentleman smiling and showing his reflective sunglasses.

A: 5
****
Q: Sentence 1: But Adora Obi Nweze, the NAACP state president, said the state only tried to prove its conclusion of suicide, rather than consider the possibility of murder. Sentence 2: Adora Obi Nweze, the NAACP state president, said the state has refused to consider the possibility of murder.

A: 3
****
Q: Sentence 1: A man and woman are walking. Sentence 2: A man and woman walking hold each other.

A:
3
****