Sentence 1: This in turn indicates the greater efficiency of delivering mail to roadside mailboxes compared to walking to the front door of a detached dwelling or business.

Sentence 2: The study assessed delivery volume of 125 mail carriers and found that delivering mail to a curbside made more sense.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: The New York Times Book Review declares it one of the year's ten best books, and Joyce Carol Oates, writing in The New Yorker (for which Updike often writes), calls it the most inventive of his myriad fiction.

Sentence 2: It is a bad book and no one paid any attention to it.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Having seen her name in the list of the saved from the Lusitania, the staff of the hospital were naturally very surprised at her not arriving to take up her billet, and at not hearing from her in any way.

Sentence 2: Although not listed as alive, they did hear from her soon after the sinking.
Is this second sentence entailed by the first?

Answer:
no