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: The Nazis increases the longevity of a handgun permit from  to  years. Sentence 2: The Nazis lowered the minimum age to buy a firearm from  to .
2

Sentence 1: Mom busted in and said, "What's that noise?" Sentence 2: My kids busted in and said 'whats that Dad?'
2

Sentence 1: A child and two dogs play in the water. Sentence 2: A child in red and blue floaties looking down at the water.

2