Assertion: petrel | /r/HasProperty | black
Facets:
Source sentences:
text: Black-winged Petrel: This petrel is medium-sized with dark gray around the eye, upperwings black with gray secondaries, underparts white with narrow gray band across upper breast, underwing white with black edging.
text: Black-winged Petrel: This petrel is medium-sized with dark gray around the eye, upperwings black with gray secondaries, underparts white with narrow gray band across upper breast, underwing white with black edging.