Somewhere in waters as yet uncharted is the Island named What Is The Name Of This Island?
It's a strange place by any standard: its inhabitants cannot form declarative statements.
Nor are they allowed exclamations. They can only ask questions. Yes/No questions, to be precise.
Some natives (type A) only ask questions whose correct answer is Yes. They could ask:
Is 2 + 2 equal to 4? But they could not ask whether that sum is 5. The other natives, (type B)
are just the opposite. They can only ask questions whose correct answer is No. They could
ask whether 2 + 2 equals 5; but not whether that sum was 4.
I met there a couple, named Sam and Janet Evening. Sam was heard to ask another native,
"Are Janet and I both type B?" What type, therefore, is Janet?