QUESTION: Generate a question with a factual answer?

ANS: What principal contribution did von Neumann make to atomic bomb?

QUESTION: Generate a question with a factual answer?

ANS: What did the ascent of the Matterhorn mark?

QUESTION: Generate a question with a factual answer?

ANS: Who was charged with brining to trial large numbers of Nazi collaborators?

QUESTION: Generate a question with a factual answer?

ANS:
What chemistry do hydrides serve as bridging ligands?