Assertion: water chestnut's value | /r/HasProperty | its escape
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Source sentences:
text: T. natans has been historically valued as an ornamental; its escape from ornamental and botanical gardens that probably explains the invasion of the plant in the New World ( Humans may be the primary vector of transmission.has been historically valued as an ornamental; its escape from ornamental and botanical gardens that probably explains the invasion of the plant in the New World ( Les and Mehrhoff, 1999 ).