Sentence 1: His stomach rumbled.

Sentence 2: His stomach made loud noises, begging for food.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: But when you declare that you'd like to be president, shouldn't everyone just mock you with a lot of snooty literary references that you don't get?

Sentence 2: When you declare that you want to be president people will mock you.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: The violence and crime that have been a very public feature of life in Kingston in recent years center on political and gang rivalries within these yards.

Sentence 2: Everything is perfectly peaceful in the city of Kingston.
Is this second sentence entailed by the first?

Answer:
no