Assertion: duck | /r/HasProperty | roasted in conventional convection oven
Facets:
value: until qing dynasty
type: TEMPORAL
value: originally
type: MANNER
Source sentences:
text: The ducks were originally roasted in a conventional convection oven until Qing Dynasty (1644 - 1911) when this dish became a delicacy in the imperial menu and were highly regarded by emperors and other members of the ruling classes.