Problem: Here is a premise:
Their scoffing is justified, but it's also irrelevant.

Here is a hypothesis:
Their scoffing is completely without good reason.

Here are the options:

Answer: no

Problem: Here is a premise:
If anyone has seen either of them touching the medicine, they will have forgotten it by that 167 time.

Here is a hypothesis:
By the time anyone has seen them, they will have forgotten seeing anyone touch the medicine.

Here are the options:

Answer: yes

Problem: Here is a premise:
and uh she would watch them at night when she came home

Here is a hypothesis:
She would watch them at night when she came home

Here are the options:

Answer: yes

Problem: Here is a premise:
The atmosphere of 19th-century Canton is best evoked on Shamian Island, a haunting, nostalgic place in the Pearl River.

Here is a hypothesis:
The best place to evoke the 19th-century atmosphere of Canton is Shamian Island.

Here are the options:

Answer:
yes