Sentence 1: There is a particular emphasis on young people.

Sentence 2: The emphasis is not on old people.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: There's no time to lose, said Tuppence, crossing the road.

Sentence 2: Tuppence was crossing a concrete road.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Now, the Ministry of Justice shares the square with banks, famous jewelers, and the Ritz Hotel.

Sentence 2: The Ministry of Justice is separated from the jewelers and the banks.
Is this second sentence entailed by the first?

Answer:
no