Who is HE?

A: Do you know who Abraham Lincoln was?

B: No.

A: And who Moshe Dayan was?

B: No.

A: See, you don't know, but I do. It is because every evening I take classes or go to the museum.

B: Well, and do you know who Vasily Ivanov is?

A: No. Who is he?

B: He's the guy who visits your wife every evening when you are in class or at the museum.