Question: Sentence A: Swords, Jon shouted.

Sentence B: Jon shouted, Swords.

If sentence A is true, how about sentence B?

Answer: yes

Question: Sentence A: The fruit and leaves feed crabs whose waste products in turn feed fish, prawns, and mollusks.

Sentence B: Without the crabs' waste, fish, mollusks, and prawns wouldn't have as much food.

If sentence A is true, how about sentence B?

Answer: it is not possible to tell

Question: Sentence A: Look out as well for a giraffe, which indicates the Indian west coast's early contact with Africa.

Sentence B: The giraffe doesn't indicate the Indian west coast's early contact with Africa.

If sentence A is true, how about sentence B?

Answer: no

Question: Sentence A: Japan overtook Britain economically in 1964.

Sentence B: In 1964, Britain was overtaken by Japan economically.

If sentence A is true, how about sentence B?

Answer:
yes