Premise:
"At last the door opened, and the German called imperiously to Conrad to return."
Hypothesis: The door finally opened, and the German disrespectfully summoned Conrad.

yes

Premise:
"Memorandum to Jim DeMocker, Office of Air and Radiation, Office of Policy Analysis and Review, US Environmental Protection Agency, June 27."
Hypothesis: The memo was addressed to Jim DeLocker on September 27.

no

Premise:
"Once or twice he discarded dignity, and pounded on the door."
Hypothesis: He was really angry, that the person didn't let him in.
it is not possible to tell