Question: The London, Kentucky micropolitan area is made up of how many counties, in the Eastern Kentucky Coalfield, the part of the Central Appalachian bituminous coalfield, including all or parts of 30 Kentucky counties?
Sentence (from "Eastern Kentucky Coalfield"): It covers an area from the Allegheny Mountains in the east across the Cumberland Plateau to the Pottsville Escarpment in the west.
Relevant evidence: No