Assertion: penny | /r/MadeOf | zinc
Facets:
value: from 1837
type: TEMPORAL
value: mostly
type: DEGREE
Source sentences:
text: But newer pennies are made mostly of zinc.
text: From 1837 to 1857, the cent was made of bronze (95 percent copper, and five percent tin and zinc).
text: The coin was larger and made of pure copper, while today’s penny is made of copper and zinc.
text: Here’s how to tell if a penny is made of copper or zinc.