Sentence 1: 'I don't understand.'

Sentence 2: Everything is understood perfectly.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: In the city of America Little, you respect your janitors.

Sentence 2: Janitors in the city of America Little are revered by all.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: The climb is worth making, if only for the view, the trees, and a cool, rushing stream.

Sentence 2: Most of the trees are sakura trees.
Is this second sentence entailed by the first?

Answer:
it is not possible to tell