Assertion: tourmaline | /r/CapableOf | emit negative ions
Facets:
value: naturally
type: MANNER
Source sentences:
text: Regardless of whether those ancient claims are true or not, what is established is that tourmaline has exceptional conductivity qualities, emits negative ions, and absorbs and conducts far-infrared rays.
text: Tourmaline emits negative ions that counteract the positive ions present in dry or damaged hair.
text: Tourmaline has properties that cause it to emit negative ions naturally.