Sentence:  The old Siberian Russians affirm that the <WSD>Mammuth</WSD> is very like the Elephant. 
Meaning of the word marked with <WSD> tags:  Any species of the extinct genus "Mammuthus", of large, usually hairy, elephant-like mammals with long curved tusks and an inclined back, which became extinct with the last retreat of ice age glaciers during the late Pleistocene period, and are known from fossils, frozen carcasses, and Paleolithic cave paintings found in North America and Eurasia.