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: Plastic toys are floating in water. Sentence 2: The ladies are performing a dance.
0

Sentence 1: A wooden bicycle with an awning. Sentence 2: A group of elderly people sitting around a dining table.
0

Sentence 1: The Dow Jones Industrial Average was up 0.3 per cent at 9,886.75, while the Nasdaq Composite index was 0.4 per cent higher at 1,986.97. Sentence 2: On Wall Street, the Dow Jones Industrial Average rose 0.5 per cent at 9,905.8 and the Nasdaq Composite added 0.7 per cent at 1,995.1.

2