Sentence 1: at the state scientific center of applied microbiology there is every kind of deadly bacteria that was studied for use in the secret biological weapons program of the soviet union.

Sentence 2: the state scientific center of applied microbiology has been working with western scientists to convert the complex into a biomedical manufacturing site.

From 0 to 5 (0="no meaning overlap" and 5="means the same thing"), how similar are the two sentences?
3