Premise:
"And if we have to fill up a blue form and send it in, and then, after three months, they send us a green one, and so on well, that won't be much use, will it?" Mr. Carter laughed outright."
Hypothesis: If we have to fill out form after form, that would help much, right?

no

Premise:
"It wasn't persuasive then, and I don't believe the Disney folks will find it rhetorically effective now."
Hypothesis: The cartoon isn't effective or convincing enough for Disney.

it is not possible to tell

Premise:
"Pa had him a spread down near th' San Sabe 'fore th' Comanches came."
Hypothesis: My parents built a house and barn in the San Sabe about 10 years before the Comanches came.
it is not possible to tell