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 small plane parked at an airfield with a cloudy sky overhead. Sentence 2: A small white plane parked in an airport on a cloudy day.

A: 5
****
Q: Sentence 1: A young boy in a white dress shirt is playing on a grassy plain. Sentence 2: A woman is getting her hair done at a salon.

A: 0
****
Q: Sentence 1: They passed through the Lemelson Medical, Educational and Research Foundation Limited Partnership in 2001 to Syndia. Sentence 2: It said the patents were "allegedly" assigned to Syndia in 2001 through the Lemelson Medical, Educational and Research Foundation Limited Partnership.

A:
2
****