Assertion: dugong's lip | /r/HasProperty | upper
Facets:
Source sentences:
text: Dugongs rip up the entire seagrass plant using their upper lip, which is flexible, and when they graze, they leave unique furrows on the seagrass bed that are visible from the surface.
text: They resemble a large dolphin, but lack a dorsal fin, and have an upper lip covered in thick bristles.
text: Dugongs rip up the entire seagrass plant using their upper lip, which is flexible, and when they graze, they leave unique furrows on the seagrass bed that are visible from the surface.