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.
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Question: Sentence 1: A man drove his car. Sentence 2: A man is driving a car.

Answer: 4


Question: Sentence 1: Thai opposition protesters begin Bangkok shutdown Sentence 2: Thai protesters launch Bangkok 'shutdown'

Answer: 5


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

Answer:
5