Sentence 1: yeah Africa

Sentence 2: No, Africa and Australia.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: And then there are the Democrats like Ted Kennedy and John Kerry, who have the gall to sign on as co-sponsors of the corporate-welfare bill while holding out for ludicrous federal maritime subsidies.

Sentence 2: Ted Kennedy has mixed feelings about the corporate-welfare bill.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: When you reach the canal, technically the Levassor River (the propeller, or h??lice, was invented by a Martiniquais, Gilbert Canque, and tested for the first time in this rather murky stream), you'll want to croseover the stone footbridge.

Sentence 2: The canal is a rather murky stream, you'll want to cross over the stone footbridge.
Is this second sentence entailed by the first?

Answer:
yes