Sentence 1: It may catch him, she murmured.

Sentence 2: She said the thing might catch him.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: 'A remarkable man, that Mr. White,' the Fat Man was mumbling.

Sentence 2: Mr. White was the fat man's boss at the post office.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: There are many reasons why an individual may choose to live in Mexico and commute to the United States for daily employment.

Sentence 2: Cheaper costs make living in Mexico a choice for Americans.
Is this second sentence entailed by the first?

Answer:
it is not possible to tell