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 black dog emerges from the water with a white ball in its mouth. Sentence 2: a black dog walking out of the water with a white ball in his mouth.

SOLUTION: 5

PROBLEM: Sentence 1: Bush plans to meet with Israeli Prime Minister Ariel Sharon and the new Palestinian prime minister, Mahmoud Abbas, in the Jordanian port of Aqaba on Wednesday. Sentence 2: On Wednesday next week, Mr Bush will meet Israeli Prime Minister Ariel Sharon and new Palestinian leader Mahmoud Abbas in Aqaba, Jordan.

SOLUTION: 5

PROBLEM: Sentence 1: the plan for tunisia is the creation of electronic databases to facilitate tax collection. Sentence 2: the plan for nigeria and mozambique is the creation an electronic database for real estate.

SOLUTION:
2