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: Little white dog wearing a leash jumping after a red ball. Sentence 2: A black and white dog returns a stick in the snow.

SOLUTION: 1

PROBLEM: Sentence 1: Five alternate jurors were also chosen, with a final one set to be selected Friday morning from the panel. Sentence 2: Five alternate jurors also were selected, with a sixth alternate to be picked on Friday.

SOLUTION: 5

PROBLEM: Sentence 1: This is extraordinarily fast, said Matt Geller, an analyst at CIBC World Markets. Sentence 2: They are actually going to record sales for Velcade this year," said Matt Geller, an analyst at CIBC World Markets.

SOLUTION:
2