Problem: Here is a premise:
Its famous bullet trains zip through the country at up to 300 km (186 miles) per hour.

Here is a hypothesis:
Its famous bullet train cannot exceed 186 km per hour.

Here are the options:

Answer: no

Problem: Here is a premise:
It was when you discovered that the lock of the despatch-case in Mrs. Inglethorp's bedroom had been forced.

Here is a hypothesis:
The despatch-case had been forced open and all the important documents were gone.

Here are the options:

Answer: it is not possible to tell

Problem: Here is a premise:
His reckless attacks became more careful.

Here is a hypothesis:
He started to be more cautious when he attacked.

Here are the options:

Answer: yes

Problem: Here is a premise:
These parameters were used to calibrate WTP for the visibility changes resulting from the Clear Skies Act.

Here is a hypothesis:
These parameters were the only parameters that were used to calibrate WTP for visibility changes.

Here are the options:

Answer:
it is not possible to tell