Assertion: mermaid | /r/CapableOf | destroy ursula's magical shell
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Source sentences:
text: In the show's finale, Ursula is defeated by Ariel, not Eric, when the mermaid destroys Ursula's magical shell since the climax in which Ursula becomes a gargantuan monster and then impaled by the bow of a ship is too expensive and impractical for a staged show.