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 young boy is holding a guitar. Sentence 2: A little boy is playing a guitar.

SOLUTION: 3

PROBLEM: Sentence 1: A group of penguins is walking. Sentence 2: A large amount of penguins are heading to the ocean.

SOLUTION: 3

PROBLEM: Sentence 1: Country-music station KKCS has suspended two disc jockeys for playing songs by the Dixie Chicks in violation of a ban imposed after one group member criticized President George Bush. Sentence 2: A radio station has suspended two disc jockeys for locking themselves in the studio and continuously playing Dixie Chicks songs, violating the station's two-month-old ban on the group's music.

SOLUTION:
3