Assertion: proboscis monkey's group | /r/HasProperty | one of langurs
Facets:
Source sentences:
text: Analysis of mtDNA confirms the Asian species form two distinct groups, one of langurs and the other of the "odd-nosed" species, but are inconsistent as to the relationships of the gray langurs; some studies suggest that the gray langurs are not closely related to either of these groups, while others place them firmly within the langur group.