Sentence 1: In today's environment this is impossible because virtually all posts in industrial countries consider much of their operational cost data to be commercially sensitive and will not share them.

Sentence 2: Industrial countries easily share data.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Drug prices have fallen slightly in the last three years.

Sentence 2: In the last three years, the price of drugs has fallen slightly.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: But L.A. is also linked with adventure and maybe even danger, complete with earthquakes, floods, crime, and scandals of O. J. Simpson proportions.

Sentence 2: L.A. is in no danger of floods or earthquake.
Is this second sentence entailed by the first?

Answer:
no