Sentence 1: Kobe is a major cosmopolitan center with thriving restaurants, bars, and nightlife, not to mention Nankin-machi, Japan's most famous Chinatown.

Sentence 2: Nankin-machi is Japan's most famous Chinatown and is located in Kobe.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: With its wide, sandy beach, Portobello is a quintessential British seaside town.

Sentence 2: Portobello is very popular with British tourists.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Entire books have been written about the original mosaics on the five domes and the great barrel vaults separating them, dating from the 11th to the 15th centuries.

Sentence 2: Books have been written about how the domes reflect sunlight.
Is this second sentence entailed by the first?

Answer:
no