Disambiguation evidence for Appalachian coalfield via surface form
"Bituminous coal fields of Pennsylvania"
As object (1)
Triples where some other subject referred to this entity
as "Bituminous coal fields of Pennsylvania".
first geological survey of Pennsylvania
→
appliesToPart
→
"Bituminous coal fields of Pennsylvania"
ⓘ
↳ resolves to Appalachian coalfield
surface form:
First Geological Survey of Pennsylvania