But who can say of what sort?
I don't think we have ever had occasion to settle the question.

You know there are people like that.

About their country, their religion, their profession, they can't tell." Gertrude stood there gazing; she had not asked him to sit down.

She had never heard of people like that; she wanted to hear.

"Where do you live ?" she asked.
"They can't tell that, either!" said Felix.