Sentence 1: Something in their eyes put Ca'daan on guard.

Sentence 2: Ca'daan relaxed as their eyes twinkled with laughter.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: If not, stadium seating will always be accessible to the average fan.

Sentence 2: The average fan prefers stadium seating.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: In response to a May 17, 2001 request from Senators James M. Jeffords (VT) and Joseph I. Lieberman (CT), this report describes the results of a modeling study done to evaluate the potential impacts of reducing nitrogen oxides (NOx), sulfur dioxide (SO2), mercury (Hg), and carbon dioxide (CO2) emissions from the US electric power sector.

Sentence 2: The Report addresses a response to the request from the two senators.
Is this second sentence entailed by the first?

Answer:
yes