TASK DEFINITION: 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.
PROBLEM: Sentence 1: john duncan is great britain's ambassador for multilateral arms control and disarmament. Sentence 2: at un assembly chinese government urges increased efforts toward global arms control and disarmament.

SOLUTION: 1

PROBLEM: Sentence 1: Glover spoke at a news conference that included about 20 relatives of the victims. Sentence 2: About 20 family members of the victims were invited to the news conference.

SOLUTION: 3

PROBLEM: Sentence 1: A girl is playing a flute. Sentence 2: A band is playing on a stage.

SOLUTION:
1