Sentence 1: I don't know where they would go to file a complaint.

Sentence 2: I can give you detailed information on where to go to file a complaint.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Four distinct peoples once inhabited the land now known as the Picts in the north, the Britons in the southwest, the invading Angles in the southeast, and the Scots in the west.

Sentence 2: The land was inhabited by a single tribe.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Jon looked at Ca'daan and Ca'daan felt his skin grow clammy.

Sentence 2: Ca'daans skin was clammy and Jon was looking at him.
Is this second sentence entailed by the first?

Answer:
yes