Assertion: latex balloon | /r/HasProperty | manufactured for first time
Facets:
value: in london
type: LOCATION
value: in 1847
type: TEMPORAL
value: by j.g. ingram
type: OTHER
Source sentences:
text: Latex balloons were manufactured for the first time in London in 1847 by J.G. Ingram, but they didn’t enter mass production until the 30s of the 20th century.