Sentence 1: Havana's delicious Cathedral Square, the focus of Habana Vieja life, could be a stage set.

Sentence 2: Cathedral Square is the focus of Habana Vieja life.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: i used to i used to date a girl who taught English at ninth grade level

Sentence 2: She really loved teaching English.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: My wedding is set for August.

Sentence 2: My wedding is set for November.
Is this second sentence entailed by the first?

Answer:
no