Sentence 1: oh i see huh i didn't realize that

Sentence 2: I know, I was well aware of that all along.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Rooms 11-12 concentrate on the period between 1100 b.c. and 650 b.c., including a large collection of gold jewelry.

Sentence 2: A big collection of gold jewelry, dating from before the birth of Christ, is included in Rooms 11-12.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: Despite the differences between the Chinese majority and the European minority, relations were generally cordial.

Sentence 2: Even with their differences, both peoples were able to come to common ground.
Is this second sentence entailed by the first?

Answer:
yes