Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Sentence 1: A plane is taking off. Sentence 2: An air plane is taking off.
Solution: 5
Reason: Here both statements are talking about the same thing hence it will be classified as a 5.

Now, solve this instance: Sentence 1: Allegiant shares rose $4, or $17.2 percent, to $27.43 in Thursday morning trading on the Nasdaq Stock Market. Sentence 2: Allegiant's stock closed Wednesday at $23.40, up 64 cents, in trading on the Nasdaq market.
Student:
2