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: A total of 17 cases have been confirmed in the southern city of Basra, the Organization said. Sentence 2: A total of 17 confirmed cases of cholera were reported yesterday by the World Health Organisation in the southern Iraqi city of Basra.

SOLUTION: 4

PROBLEM: Sentence 1: Plastic toys are floating in water. Sentence 2: The ladies are performing a dance.

SOLUTION: 0

PROBLEM: Sentence 1: Microsoft has been awarded a patent for a feature in instant messaging that alerts a user when the person they are communicating with is inputting a message. Sentence 2: Microsoft has been awarded a patent on a popular instant-messaging feature that shows users when the person on the other end of the conversation is typing a message.

SOLUTION:
5