Assertion: pig iron | /r/HasProperty | made into steel
Facets:
value: alternatively
type: DEGREE
Source sentences:
text: In the United States, much of the iron was taken from the ground in Minnesota and then sent by ship to Indiana and Michigan where it was made into steel.
text: Alternatively pig iron may be made into steel (with up to about 2% carbon) or wrought iron (commercially pure iron).