Assertion: iron | /r/HasProperty | common element
Facets:
value: relatively
type: DEGREE
value: in the universe
type: LOCATION
value: in many minerals
type: LOCATION
Source sentences:
text: Although iron is a common element, pure iron is almost never found in nature.
text: Because iron is so common (composing 5% of the Earth's crust), strong, and relatively easy to process, it plays a very intimate role in human civilization.
text: Iron is a common element in many minerals.
text: Iron is a relatively common element in the universe, being found in stars, meteorites and rocky planets in considerable quantities.
text: In fact, iron is so common that production generally focuses only on ores with very high quantities of it.