Assertion: windmill | /r/AtLocation | europe
Facets:
value: about the time of the crusades
type: TEMPORAL
Source sentences:
text: The first windmill to appear in Europe was the post mill with a horizontal axis system, with a four-bladed mill attached to a central post.
text: Windmills first appeared in Europe about the time of the Crusades (1096-1270).
text: The first windmills appeared in Europe during the 12th century in northwestern France and southern England.