Premise:
"well do you think that um it should be like we have this sort of random spot testing type of thing or do you think it would be more palatable if we had some sort of regular schedule or would that just allow everybody a chance to get out of it"
Hypothesis: People would probably take advantage of the regular schedule.

it is not possible to tell

Premise:
"If a salamander could destroy even such a body as his, then the fragments of sun that were still roiling across the landscape would be fatal."
Hypothesis: Both the salamanders and the sun were certainly harmless to him.

no

Premise:
"Columbus christened the island San Juan Bautista (honoring St. John the Baptist)."
Hypothesis: The island was christened San Juan Bautista.
yes