Sentence 1: In books, you simply leapt into another, promised the driver a sovereign or its modern equivalent and there you were.

Sentence 2: In books if you promised the driver cash you were there.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Since Hong Kong is a duty-free port and charges no sales tax, goods are cheaper here than in the country where they were made.

Sentence 2: In Hong Kong, goods are much more expensive than in their country of origin, because Hong Kong has high sales tax.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: The western end of George Street begins at Charlotte Square, originally named St. George's Square after the patron saint of England (mirroring St. Andrew's Square at the street's eastern end, which was named for the patron saint of Scotland).

Sentence 2: The square at the eastern end of the street was named after the patron saint of Ireland.
Is this second sentence entailed by the first?

Answer:
no