Assertion: astronomy | /r/HasProperty | treated as the foundation
Facets:
value: prior to this
type: TEMPORAL
value: during the late medieval period
type: TEMPORAL
Source sentences:
text: During the later part of the medieval period, astronomy was treated as the foundation upon which astrology could operate.
text: Prior to this, especially during the late medieval period, astronomy was treated as the foundation upon which astrology operated.