Assertion: agate's band | /r/CapableOf | serve as spirit levels
Facets:
value: because of the way
type: CAUSE
Source sentences:
text: Because of the way they form (which will be explained later), horizontal bands can serve as spirit levels to determine the original orientation of the specimen in the host rock.
text: Horizontal bands can serve as spirit levels to determine the original orientation of the specimen in the host rock.