Sentence 1: Another way to shift work to the private sector is through contracts with suppliers.

Sentence 2: Another way to shift work to the private sector is by not going through contracts with suppliers
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Adrin and the Kal were back to back.

Sentence 2: Adrin and Kal stood face to face.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: He gave away documents that could have helped the Soviets identify American moles.

Sentence 2: The documents that he gave away had sensitive information.
Is this second sentence entailed by the first?

Answer:
yes