Sentence 1: Immediately east of the Museo del Prado is the city's major green space, Parque del Buen Retiro.

Sentence 2: The park is more than twelve acres and is covered in trees.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: The angle of the cheek-bones hinted at his Slavonic ancestry, otherwise there was nothing to indicate his nationality.

Sentence 2: He was born from Slavonic parents.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Of course, I'm betting on the demanding job.

Sentence 2: The job is so demanding because of the long hours.
Is this second sentence entailed by the first?

Answer:
it is not possible to tell