Assertion: tourmaline's pole | /r/HasProperty | extinguished at 950°
Facets:
value: to 1000° c.
type: TEMPORAL
Source sentences:
text: The present inventor therefore has conducted the following experiments and confirmed the fact that the permanent electric poles of tourmaline are extinguished at 950° to 1000° C.
text: The present inventor therefore has conducted the following experiments and confirmed the fact that the permanent electric poles of tourmaline are extinguished at 950° to 1000° C.