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 white dog with red ears is running in the snow. Sentence 2: a wet black dog with a red collar is in the river

Answer: 1


Question: Sentence 1: Close-up of a hummingbird. Sentence 2: A closeup of a hummingbird flying.

Answer: 4


Question: Sentence 1: The Federal Trade Commission (FTC) asked Congress today for additional authority to fight unwanted Internet spam, which now accounts for up to half of all e-mail traffic. Sentence 2: The Federal Trade Commission asked Congress yesterday for broader powers to attack the rapidly growing problem of spam, which new studies show accounts for half of all e-mail traffic.

Answer:
5