Problem: Here is a premise:
For example, depending on the ultimate cap levels chosen by Congress, this type of legislation would obviate the need for Best Available Retrofit Technology requirements, mercury MACT, and new source review case-by-case technology requirements for power generators.

Here is a hypothesis:
Legislation could remove the need for Best Available Retrofit Technology requirements in generators.

Here are the options:

Answer: it is not possible to tell

Problem: Here is a premise:
I smiled back.

Here is a hypothesis:
I grinned at the person.

Here are the options:

Answer: yes

Problem: Here is a premise:
The heat was still intense, even behind the stone block, but it was bearable--at least for him.

Here is a hypothesis:
The stone block shielded him from half of the heat.

Here are the options:

Answer: it is not possible to tell

Problem: Here is a premise:
It's much better to answer these questions now, with chemical weapons, than 10 years from now, with biological weapons.

Here is a hypothesis:
It is better to use biological weapons now than chemical weapons later.

Here are the options:

Answer:
no