This is what I regard under the present conditions as the principal question.

The principal question here and in the unseen soap concerns a mysterious room.

The principal question is what precise powers such an authority would have.

Investigators say that answers to the principal questions may be weeks or months away.

The principal question is therefore when that sequence started.

The principal question asked was, "Is cinema a language about to get lost, an art about to die?"

He'd even gotten an answer to his principal question.

"And when we asked around, we kept getting very different answers to our one principal question: What would a quake here actually do?"

Specifically, they designed 14 experiments whose purpose was to answer two principal questions about television's influence on political consciousness.

The principal question in the case was what happens then.