Assertion: canvasback | /r/HasProperty | a. valisineria
Facets:
Source sentences:
text: The diving ducks (or sea ducks) include the greatest number of marine species, such as eiders (which are variously classified as members of the tribe Mergini or placed in a separate tribe Somateriini) and scoters (Melanitta), but they also include primarily freshwater species such as mergansers (Mergus and Lophodytes), the ring-necked duck (Aythya collaris), and the pochards (Aythya and Netta), including the scaups (A. marila, A. affinis, and A. novaeseelandiae) and the canvasback (A. valisineria).