Assertion: tourmaline | /r/HasAspect | electric poles
Facets:
Source sentences:
text: In view of the above literature and research, the present inventor is the first to discover that tourmaline has electric poles corresponding to the magnetic poles of a permanent magnet.
text: In view of the above literature and research, the present inventor is the first to discover that tourmaline has electric poles corresponding to the magnetic poles of a permanent magnet.
text: In view of the above literature and research, the present inventor is the first to discover that tourmaline has electric poles corresponding to the magnetic poles of a permanent magnet.