Assertion: monkey's group | /r/HasProperty | gray-necked
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Source sentences:
text: Within the genus, there are two groups of owl monkeys, the gray-necked (lemurinus and subspecies, hershkovitzi, trivirgatus, and vociferans), found north of the Rio Amazonas (Amazon River) and the red-necked (miconax, nancymaae, nigriceps, azarae and subspecies), found south of the Rio Amazonas (Groves 2001).