Part 1. 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.
Part 2. Example
Sentence 1: A plane is taking off. Sentence 2: An air plane is taking off.
Answer: 5
Explanation: Here both statements are talking about the same thing hence it will be classified as a 5.
Part 3. Exercise
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.
Answer:
5