"Did he tell you in Russian?"
"No, sir; in German."
"Do you remember what he said?"
"'Fünfzehn minuten.'"
"What question did you ask him?"
"'Wie lange bleiben sie hier?'"
"You asked him how long he remained at the station, after he had been there ten minutes?"
"Yes, sir."
"Your German was better than your logic."
"I supposed he meant fifteen minutes more."