We always went to church in the morning, and people were very kind, but it was kindness with a question-mark.
Aren't you afraid that when you die you'll change into a question-mark?
It has in it that element which he has described by a question-mark in his diagram, the element of forecast.
If Yorkburg had a coat of arms it ought to be a question-mark.
A punctuation mark (?) that follows a direct question: “Is Ralph really seven feet tall?”