Assertion: tourmaline | /r/HasProperty | useful phase
Facets:
value: because of chemical diversity
type: CAUSE
value: because of its refractory nature
type: CAUSE
Source sentences:
text: Tourmaline, however, is a useful phase for this purpose because of its refractory nature and chemical diversity.
text: Since tourmaline is a useful material, how does the dryer manufacturer integrate tourmaline into a hair dryer?