Input:

Waste in the ponds produced by leaching gold from ore is a source of potential environmental dangers.

Sentence: Gold can produce waste.

Output: Yes

Input:

Rodriguez was spotted by a witness running away from the stairwell where the backpack was found seconds before it went off.

Sentence: Rodriguez was not casually walking away from the stairwell.

Output: Yes

Input:

All genetically modified food, including soya or maize oil produced from GM soya and maize, and food ingredients, must be labelled.

Sentence: Genetically modified food is morally wrong.

Output: It's impossible to say

Input:

Well, I don't believe in command and control out of Washington, D.C. I believe Washington ought to set standards, but again I think we ought to be collaborative at the local levels and I think we ought to work with people at the local levels. And by the way, I just want to make sure -- I can't let him just say something and not correct it.

Sentence: The narrator is an old man

Output:
It's impossible to say