Premise:
"There is a viewing platform around the camera, allowing first-hand viewing of the cityscape; there are also helpful explanatory maps pointing out the highlights on the horizon."
Hypothesis: There are no maps available.

no

Premise:
"no no and this woman was um stocking the shelves in a drugstore"
Hypothesis: The woman was a doctor.

no

Premise:
"However, relocation of the air preheater(s) usually is not necessary."
Hypothesis: It is a lot of trouble to move an air preheater.
it is not possible to tell