Premise: Smith's press secretary, Ken Wolfe, boasts that by offering that bill, We have called their bluff.

Hypothesis: Ken Wolfe may know that the bill puts them in a tough spot, thus boasts about calling their bluff since they can't do anything.
Answer: it is not possible to tell

Premise: I said bolted, meaning that it was fastened, and I could not open it, but I believe all the doors were found bolted on the inside."

Hypothesis: Some knobhead left all the doors unlocked and wide-open!
Answer: no

Premise: The most recent research has uncovered evidence supporting another hypothesis that an attack by invaders or rebel forces may have brought about the end of this fine culture.

Hypothesis: An attack from the northern barbarian tribes may have brought down the culture.
Answer: it is not possible to tell

Premise: Not a pleasant prospect and not one easily avoided---not even by any reform package or proposal that I've seen.

Hypothesis: The prospect can be avoided by simply following the very valid proposals received.
Answer: no