Assertion: lamp | /r/HasProperty | light source
Facets:
value: in technical terminology
type: OTHER
value: to provide illumination
type: PURPOSE
Source sentences:
text: The lamp (light source) has four filament strands, hence the name
text: A lamp is a source of light to provide illumination when natural light is either insufficient in quantity or quality, or not available.
text: In technical terminology, the lamp is the light source, which, in casual terminology, is called the light bulb.