Sentence 1: no unfortunately i haven't i heard it's really good but

Sentence 2: I have seen it a hundred times.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: It's possible that these companies believed that their lobby in Washington was so strong that Congress would ratify any deal.

Sentence 2: the lobbyists had good intentions
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Some higher efficiency boilers may have increased flue gas velocities and can result in corrosive flue gas blow through to the absorber.

Sentence 2: Higher efficiency boilers increase the output.
Is this second sentence entailed by the first?

Answer:
yes