Agree with Nir Shelter that the answers to the basic questions should be in the form or short, easy to read sentences. ?By short I mean, no more than 10 words for each answer. ?And that's just for the first cut, the rough draft. ?That can be tough to do, but that's the purpose of the questions and the answers, to distill the plot down to it's essence, ?to realize ?Ludwig Mies van der Rohe's dictum, "Less is more."
The effort required to compose a concise, clear logline is also a gauge of the concept's marketability in the sense of how easy is it to explain to others. ?Alas, in this era of multitasking, fragment attention spans, you've really only got one opportunity and a few precious seconds to grab and hold movie makers attention.
It ain't the way it ought to be -- but that's the way it is.