Assertion: bicycle's gear | /r/HasProperty | developed
Facets:
value: during these years
type: TEMPORAL
Source sentences:
text: Dérailleur gears and hand-operated Bowden cable-pull brakes were also developed during these years, but were only slowly adopted by casual riders.
text: Once coasting and gears were developed, the Tour founder Henri Desgrange is quoted to have said: “Come on, fellows!
text: Derailleur gears were also developed, allowing smoother riding.