Sentence 1: 'Hmmm.' Derry bit her bottom lip.

Sentence 2: Derry thought and bit her lip.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: Nema started to protest, then changed her mind.

Sentence 2: Nema began to disagree, then had a change of mind.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: Dalhart, born Marion Slaughter, was the son of a successful rancher from a Texas port city.

Sentence 2: Marion Slaughter was the son of a successful rancher.
Is this second sentence entailed by the first?

Answer:
yes