Assertion: mammal | /r/HasProperty | endothermic
Facets:
Source sentences:
text: Mammals are endothermic which means that they are warm-blooded and able to maintain their own body temperature.
text: They are endotherms, which means that they can maintain their body temperature.
text: Nearly all mammals are endothermic ("warm-blooded").
text: Most mammals are endothermic; they produce their own body heat.