A: Who were blue jeans invented by?

B: They were invented by Levi Strauss.

A: Who was 'Wuthering Heights' written by?

B: It was written by Emily Bronte.

A: Who was 'The Magic Flute' composed by?

B: It was composed by Mozart.

A: Who was 'Guernica' painted by?

B: It was painted by Pablo Picasso