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.

[Q]: Sentence 1: Chris Froome rides to Tour de France endgame Sentence 2: Chris Brown concerts cancelled new
[A]: 0

[Q]: 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.
[A]: 2

[Q]: Sentence 1: Spot gold was quoted at $367.90/368.60 an ounce at 1000 GMT, having marched up to $369.50 -- a level not seen since February 10. Sentence 2: Spot gold was quoted at $358.65/359.15 an ounce at 0500 GMT, having darted as high as $359.25 -- a level not seen since February 25.
[A]:
3