Assertion: zinc disc | /r/HasProperty | covered with fine layer of wax
Facets:
value: to carry the sound
type: PURPOSE
value: to carry a gramophone
type: PURPOSE
Source sentences:
text: In 1888 the German engineer E. Berliner (1851–1929), who was working in the United States, proposed a zinc disc covered with a fine layer of wax to carry the sound and a gramophone to reproduce this sound from the disc.