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: the villagers are inadvertently involving themselves in drug trafficking. Sentence 2: 105 inmates are serving sentences for drug trafficking.

SOLUTION: 1

PROBLEM: Sentence 1: 6.6 quake rocks Indonesia's Papua: USGS Sentence 2: 6.6 quake rocks Indonesia's Papua: US Geological Survey

SOLUTION: 5

PROBLEM: Sentence 1: A white dog runs through a field of yellow flowers. Sentence 2: A dog with a red collar runs in a forest in the middle of winter.

SOLUTION:
2