Assertion: cockatoo's bird | /r/HasProperty | the most diverse bird group
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Source sentences:
text: Perching birds, also known as passerines, are the most diverse bird group, consisting of over 5,000 species of tits, sparrows, finches, wrens, dippers, thrushes, starlings, warblers, crows, jays, wagtails, swallows, larks, martins, warblers, and many others.