Sentence 1: so but i'm not really sure

Sentence 2: I am confused.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: Cruises around Lake Annecy start from the Thiou river.

Sentence 2: The area is known to have a lot of travelers.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: yeah yeah and i'm afraid this summer is going to be bad as far as

Sentence 2: I am concerned that the summer is going to be bad.
Is this second sentence entailed by the first?

Answer:
yes