"A Number"@en . "Salter" . "A Number is a 2002 play by English playwright Caryl Churchill which addresses the subject of human cloning and identity, especially nature versus nurture. The story, set in the near future, is structured around the conflict between a father (Salter) and his sons (Bernard 1, Bernard 2, and Michael Black) \u2013 two of whom are clones of the first one."@en . "Bernard 2" . "Bernard 1" . "1010035" . "Human cloningand identity" . . "Michael Black" .