Sentence 1: Parkson's, the well-known theatrical costumiers, and it was addressed to " "(the debatable initial) Cavendish, Esq., Styles Court, Styles St. Mary, Essex." 127 "It might be T., or it might be L.," I said, after studying the thing for a minute or two.

Sentence 2: This piece of evidence has just about closed this case.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Miss Howard. Miss Howard produced the letter written to her by Mrs. Inglethorp on the evening of the 17th.

Sentence 2: Miss Howard received no letter dated the 17th from Mrs. Inglethorp.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: She was saved all right, but they didn't seem able to hear of her over this side.

Sentence 2: She was lost, but everyone heard about it.
Is this second sentence entailed by the first?

Answer:
no