Sentence 1: As unusual as Button's case is, it shares one common characteristic with nearly all the 30,000 suicides that occur each year in the United States--the victims are not in a rational state of mind.

Sentence 2: Suicide by amputation is uncommon, but further points out the fact that suicidal tendencies are not associated with clear thinking.
Is this second sentence entailed by the first sentence?
it is not possible to tell