Sentence 1: The book's cynicism is even more distressing, symptomatic as it is of a larger cynicism that seems to have gripped our public culture.

Sentence 2: The book is popular amongst today's youth, given their cynicism.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: it's getting more expensive unfortunately too

Sentence 2: Since the economy has gotten worse the past 5 years, it's getting a lot more expensive.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: But I think Plotz may be mistaken in saying the recent Iraq bombing needed authorization.

Sentence 2: But I think Plotz is correct, no authorization is needed.
Is this second sentence entailed by the first?

Answer:
no