Assertion: sauna's heater | /r/HasProperty | infrared
Facets:
Source sentences:
text: The bathroom has a special feature, an infrared sauna (Wikipedia: uses infrared heaters to emit infrared light experienced as radiant heat which is absorbed by the surface of the skin) with build-in ceiling speakers and automatic sensor lighting.
text: An infrared sauna is usually a wooden box, or small wooden room, containing several infrared heaters.