Assertion: manganese's form | /r/HasProperty | pure
Facets:
Source sentences:
text: It is a steel grayish, hard, denser and brittle metallic element that is difficult to cut, shape or bend in its pure form.
text: Manganese rarely occurs in its pure form, and instead combines with oxygen, sulfur, chlorine, carbon or other substances to form compounds.
text: It is a steel grayish, hard, denser and brittle metallic element that is difficult to cut, shape or bend in its pure form.
text: Manganese rarely occurs in its pure form, and instead combines with oxygen, sulfur, chlorine, carbon or other substances to form compounds.