Assertion: joker's identity | /r/HasProperty | tied to homeland
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text: David Rooney, a theater critic for The New York Times, in his evaluation of the play, Year Zero, considers Superman to be the "quintessential immigrant story ... (b)orn on an alien planet, he grows stronger on Earth, but maintains a secret identity tied to a homeland that continues to exert a powerful hold on him even as his every contact with those origins does him harm.