Assertion: record player | /r/HasProperty | improved by alexander graham bell
Facets:
value: in the 1880s
type: TEMPORAL
value: under the volta group
type: LOCATION
Source sentences:
text: The first phonograph was invented by Thomas Edison in the 1870s, and it was improved upon by Alexander Graham Bell under the Volta group in the 1880s.
text: The first phonograph was invented by Thomas Edison in the 1870s, and it was improved upon by Alexander Graham Bell under the Volta group in the 1880s.
text: The first phonograph was invented by Thomas Edison in the 1870s, and it was improved upon by Alexander Graham Bell under the Volta group in the 1880s.