Sentence 1: At the same time, some central questions need to be submitted to empirical testing.

Sentence 2: There are three questions that need to be submitted.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Thus, the H-2A worker is only admitted to the United States to perform work for a designated employer or employers, and must leave the United States when that employment terminates for any reason.

Sentence 2: H-2A workers must leave the United States when their designated employment ends.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: During a counter-offensive in 1109, the town was overrun by the Moors, but the Christianized fortress held.

Sentence 2: Despite the town being overrun by Moors, the fortress did not fall.
Is this second sentence entailed by the first?

Answer:
yes