Assertion: king vulture | /r/HasProperty | one of several bird species
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Source sentences:
text: The king vulture is one of several bird species with an AZA studbook, which is kept by Shelly Collinsworth of the Fort Worth Zoo.
text: The King Vulture is one of the few bird species with an AZA studbook, which as of 2007 is kept by Brian Tierney of the Bronx Zoo.