Sentence 1: oh goodness well i'll let you get i enjoyed it bye

Sentence 2: You're obviously extremely busy so I'll let you go now.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: In Singapore the following year, they were joined by representatives from Sarawak and Brunei.

Sentence 2: Representatives from Sarawak and Brunei couldn't be bothered to go to Singapore the following year.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Families with children might look for the gentlest incline of sand and the tiniest ripple of wavelets, while the snorkellers will probably be happier with a rocky coastline that attracts interesting sealife.

Sentence 2: There is no sealife around the rocky coastline.
Is this second sentence entailed by the first?

Answer:
no