Assertion: coin's metal | /r/HasProperty | cheaper to obtain
Facets:
Source sentences:
text: While genuine coins in the United States currency are made from various alloys of copper, nickel, and zinc, Canadian coins are made mostly from steel with some copper and nickel, and euro coins are made from steel, nickel, and brass, slugs are frequently made from differing metals and alloys that are cheaper to obtain and mold, such as aluminum, tin, and lead.