Assertion: mammal | /r/CapableOf | characterize by the presence of mammary glands
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Source sentences:
text: Mammals (from Latin mamma "breast") are vertebrate animals constituting the class Mammalia ( ), and characterized by the presence of mammary glands which in females (and sometimes males) produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or hair, and three middle ear bones.