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