Question: The Parshall Oil Field is an oil field producing from a rock unit from the Late Devonian to Early Mississippian age occupying about how many sqmi?
Sentence (from "Parshall Oil Field"): The Parshall Oil Field is an oil field producing from the Bakken Formation and Three Forks Formation near the town of Parshall, in Mountrail County, North Dakota.
Relevant evidence: Yes