Assertion: simple accordion | /r/AtLocation | tula
Facets:
value: according to russian researchers
type: OTHER
value: by timofey vorontsov
type: OTHER
value: from 1820
type: TEMPORAL
value: by ivan sizov
type: OTHER
value: around 1830
type: TEMPORAL
Source sentences:
text: Nevertheless, according to Russian researchers, the earliest known simple accordions were made in Tula, Russia, by Ivan Sizov and Timofey Vorontsov around 1830, after they received an early accordion from Germany.
text: The accordion's basic form is believed to have been invented in Berlin, in 1822, by Christian Friedrich Ludwig Buschmann, although one instrument has been recently discovered that appears to have been built earlier, though according to Russian researchers, the earliest known simple accordions were made in Tula, Russia, by Timofey Vorontsov from 1820, and Ivan Sizov from 1830.