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: A dog rides a skateboard. Sentence 2: A dog is riding a skateboard.

A: 5
****
Q: Sentence 1: A white bus with the word Julia is near water and a big ship. Sentence 2: A white bus with water and a barge in the background.

A: 4
****
Q: Sentence 1: A black dog wearing an orange collar is entangled with fishing wire. Sentence 2: The black dog wearing a red collar shakes water off.

A:
2
****