Assertion: tourmaline's property | /r/HasProperty | exhibited by tourmaline
Facets:
Source sentences:
text: The inventor of the present application has studied and experimented on the electric properties exhibited by tourmaline, and has discovered the following facts.
text: The inventor of the present application has studied and experimented on the electric properties exhibited by tourmaline, and has discovered the following facts.
text: The inventor of the present application has studied and experimented on the electric properties exhibited by tourmaline, and has discovered the following facts.