Assertion: batman's story | /r/HasProperty | superman
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Source sentences:
text: Pre-Crisis interpretations of Superman very much assumed that Clark Kent was the "mask" and Kal-El the person (in the classic story Superman: Whatever Happened to the Man of Tomorrow?, when Superman's dual life is revealed, he completely abandons his Clark Kent persona).
text: In the comic story Superman: Birthright, the crest is described as an old Kryptonian symbol for hope.