Boy: Who's that?

Teacher: It's Albert Einstein.

Boy: Why he famous?

Teacher: He waswerewasn'tweren't a scientist.

Boy: WasWereWasn'tWeren't he English?

Teacher: No, he waswerewasn'tweren't. He waswerewasn'tweren't German. He waswerewasn'tweren't born in Ulm.

Boy: And waswerewasn'tweren't he a musician?

Teacher: Yes, he waswerewasn'tweren't. He waswerewasn'tweren't a great violinist. He waswerewasn'tweren't interested in music.