Question: What is the seat of the county where the town of Hastings is located?

full_context: Document 1: Addington, Oklahoma: Addington is a town in Jefferson County, Oklahoma, United States. The population was 114 at the 2010 census, a decrease of 2.6 percent from 117 at the 2000 census. The town was founded in 1890.
Document 2: Wickliffe, Oklahoma: Wickliffe is a census-designated place (CDP) in Mayes County, Oklahoma, United States. The population was 99 at the 2000 census, but only 75 at the 2010 census, a drop of 25 percent.
Document 3: Jennings, Oklahoma: Jennings is a town in Pawnee County, Oklahoma, United States. The population was 363 at the 2010 census, a 2.7 percent decline from 373 at the 2000 census.
Document 4: Oskaloosa, Kansas: Oskaloosa is a city in and the county seat of Jefferson County, Kansas, United States. As of the 2010 census, the city population was 1,113.
Document 5: Eufaula, Oklahoma: Eufaula is a city in and county seat of McIntosh County, Oklahoma, United States. The population was 2,813 at the 2010 census, an increase of 6.6 percent from 2,639 in 2000. Eufaula is in the southern part of the county, north of McAlester and south of Muskogee.
Document 6: Hastings, New York: Hastings is a town in Oswego County, New York, United States. The population was 9,450 at the 2010 census. The town is named after Hastings Curtiss, a prominent citizen and member of the State Assembly in 1824.
Document 7: Jeffrey City, Wyoming: Jeffrey City is a census-designated place (CDP) and former uranium mining boomtown located in Fremont County, in the central part of the U.S. state of Wyoming. The town is famous in Wyoming and the American West as symbol of a boomtown that went "bust" very quickly, as the mine was shut down in 1982 and over 95% of the inhabitants left the town within 3 years. The population was 58 at the 2010 census, far lower than its onetime population of several thousand people.
Document 8: Warr Acres, Oklahoma: Warr Acres is a city in Oklahoma County, Oklahoma, United States, and a part of the Oklahoma City metropolitan area. It was established after World War II by C.B. Warr, a dynamic businessman, builder, and commercial developer. The population was 13,164 at the 2010 census.
Document 9: Guthrie, Oklahoma: Guthrie is a city and county seat in Logan County, Oklahoma, United States, and a part of the Oklahoma City Metroplex. The population was 10,191 at the 2010 census, a 2.7 percent increase from the 9,925 at the 2000 census.
Document 10: Ozawkie, Kansas: Ozawkie is a city in Jefferson County, Kansas, United States. As of the 2010 census, the city population was 645. Located adjacent to Perry Lake, Ozawkie formerly existed in a different location but was relocated without the aide of government funding prior to the reservoir's construction.
Document 11: Waurika, Oklahoma: Waurika is the county seat of Jefferson County, Oklahoma, United States. The population was 2,064 at the 2010 census, a 4.36 percent decrease from 2,158 at the 2000 census.
Document 12: Warner, Oklahoma: Warner is a town in Muskogee County, Oklahoma, United States. The population was 1,641 at the 2010 census, an increase of 14.8 percent from 1,430 at the 2000 census. The town is home to one of the two Connors State College campuses.
Document 13: Hastings, Oklahoma: Hastings is a town in Jefferson County, Oklahoma, United States. The population was 143 at the 2010 census, a decline from 155 at the 2000 census.
Document 14: Wainwright, Oklahoma: Wainwright is a town in Muskogee County, Oklahoma, United States. The town was named for a local merchant, William Henry Wainwright.The population was 165 at the 2010 census, a decline of 16.2 percent from 197 at the 2000 census.
Document 15: Dustin, Oklahoma: Dustin is a town in Hughes County, Oklahoma, United States. The population was 395 at the 2010 census, down from 452 at the 2000 census.
ground_truth: Waurika
sub_queries: Hastings >> located in the administrative territorial entity Answer: Jefferson County
Jefferson County >> contains administrative territorial entity Answer: Waurika