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: The primary focus of Systematic Dialectics is syn chronic, not dia chronic. Sentence 2: Thus, Meta - System - atic Dialectic is Diachronico - Synchronic Dialectic.
[A]: 2


[Q]: Sentence 1: it will be hosted by the australian government. Sentence 2: the u.s. plans have angered the russian government.
[A]: 0


[Q]: Sentence 1: the south african government maintains very good relations with the united states government. Sentence 2: the cfe is 1 of several issues negatively impacting russia's relations with the united states and europe.
[A]:
1