Question: Which construction company built the largest airport in the Upper Midwest region of Minnesota, Iowa, Nebraska, North Dakota, South Dakota, and Wisconsin?
Sentence (from "Ole and Lena"): Ole and Lena (also Sven and Ole) are central characters in jokes by Scandinavian Americans, particularly in the Upper Midwest region of the U.S., particularly in Minnesota, Wisconsin, Iowa, South Dakota and North Dakota where Scandinavian immigrant traditions are common.
Relevant evidence: No