Assertion: skier's ski | /r/MadeOf | wood
Facets:
Source sentences:
text: Medieval skis were made from wood and were about 7.5 feet (2.3 m) long, 2 inches (5 cm) thick, and 5 inches (13 cm) wide.
text: At the same time, equipment evolved from skis and poles that were made of wood and other natural materials to comprising such man-made materials as fiberglass, carbon fiber, and polyethylene plastics.
text: Medieval skis were made from wood and were about 7.5 feet (2.3 m) long, 2 inches (5 cm) thick, and 5 inches (13 cm) wide.