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: China ‚Äėwill protect interests‚Äô of foreign business Sentence 2: Obama in ‚Äėdirect‚Äô confrontation with Putin on Ukraine

SOLUTION: 0

PROBLEM: Sentence 1: A small plane parked at an airfield with a cloudy sky overhead. Sentence 2: A small white plane parked in an airport on a cloudy day.

SOLUTION: 5

PROBLEM: Sentence 1: Second teenager charged with murder Sentence 2: Brother of EastEnders actress Gemma McCluskie is charged with her murder

SOLUTION:
1