Sentence 1: Frontier etiquette was different from Kentucky custom; it was safer to be quiet when not sure.

Sentence 2: Kentucky custom was the same as frontier etiquette.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: On the far wall were strips of brightly colored woven materials flanking a huge closed cupboard, a very old one, Drew thought.

Sentence 2: The wall was decorated with colorful materials.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: Competitors of the U.S.

Sentence 2: The U.S. has no competition.
Is this second sentence entailed by the first?

Answer:
no