Assertion: blast furnace | /r/AtLocation | china
Facets:
value: from about 1st century ad
type: TEMPORAL
value: from about the 5th century bc
type: TEMPORAL
Source sentences:
text: Blast furnaces existed in China from about 1st century AD and in the West from the High Middle Ages.
text: Blast furnaces existed in China from about the 5th century BC, and in the West from the High Middle Ages.
text: Blast furnaces existed in China from about 1st century AD and in the West from the High Middle Ages.