With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Dark Knight is set in a fictional city.
text_B: Beaver Run Reservoir -LRB- also known as Beaver Dam Reservoir -RRB- is a reservoir in Westmoreland County in the U.S. state of Pennsylvania , 23 miles east of Pittsburgh .. reservoir. reservoir. Westmoreland County. Westmoreland County, Pennsylvania. U.S. state. U.S. state. Pennsylvania. Pennsylvania. Pittsburgh. Pittsburgh. The elevation of Beaver Run Reservoir is 1053 feet above sea level .. sea level. sea level. The reservoir is the source of drinking water for 150,000 people , including those in Murrysville , Export and Delmont .. reservoir. reservoir. Murrysville. Murrysville. Export. Export, Pennsylvania. Delmont. Delmont, Pennsylvania. Fishing in the reservoir and hiking near the reservoir are not allowed , due to public health concerns .. reservoir. reservoir
not_related.