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.

[EX Q]: Sentence 1: A dog is jumping over a barrier at a agility competition. Sentence 2: A dog jumping over an obstacle course fence.
[EX A]: 4

[EX Q]: Sentence 1: Teenage girl killed in east London Shereka Marsh was shot in the neck, police say Sentence 2: Hackney shooting: Teenager Shereka Marsh 'bled to death after being shot in neck'
[EX A]: 5

[EX Q]: Sentence 1: A young boy is holding a guitar. Sentence 2: A little boy is playing a guitar.
[EX A]:
3