Assertion: nickel's form | /r/HasProperty | pure
Facets:
Source sentences:
text: Nickel is rarely used in its pure form.
text: Nickel is rarely found in the earth in its pure form; it mixes well with other metals to make many useful alloys.
text: Nickel is rarely used in its pure form.
text: Nickel is rarely found in the earth in its pure form; it mixes well with other metals to make many useful alloys.