Question: What county shares a border with another county, that itself borders a third county, where Pioneer Township is located?

full_context: Document 1: Monark Springs, Missouri: Monark Springs is a ghost town in Newton County, Missouri, United States. It is located approximately five miles east of Neosho.
Document 2: Ozark Township, Barry County, Missouri: Ozark Township is one of twenty-five townships in Barry County, Missouri, United States. As of the 2000 census, its population was 879.
Document 3: Washburn Township, Barry County, Missouri: Washburn Township is one of twenty-five townships in Barry County, Missouri, United States. As of the 2000 census, its population was 1,070.
Document 4: List of municipalities in Tennessee: Tennessee is a state located in the Southern United States. There are 346 municipalities in the state of Tennessee. Municipalities in the state are designated as ``cities ''or`` towns''. As of the 2010 U.S. Census, 3,564,494 Tennesseans, or just over 56% of the state's total population of 6,346,105, resided in municipalities. The remainder resided in unincorporated areas.
Document 5: Oak Grove, Sumner County, Tennessee: Oak Grove is a census-designated place and unincorporated community in Sumner County, Tennessee, United States. Its population was 231 as of the 2010 census.
Document 6: Union Township, Lawrence County, Ohio: Union Township is one of the fourteen townships of Lawrence County, Ohio, United States. The 2000 census recorded 9,002 people in the township, 7,540 of whom lived in the unincorporated portions of the township.
Document 7: Pioneer Township, Barry County, Missouri: Pioneer Township is one of twenty-five townships in Barry County, Missouri, United States. As of the 2000 census, its population was 186.
Document 8: Monett, Missouri: Monett is a city in Monett Township in Barry County and Pierce Township in Lawrence County, Missouri, United States. It is the most populous city in Barry and Lawrence counties, and the 83rd most populous in the State of Missouri. The city is located in the Ozarks, just south of Interstate 44 between Joplin and Springfield. The population was 8,873 at the 2010 census. The population was estimated to have been 9,118 in 2018.
Document 9: Summertown, Tennessee: Summertown is an unincorporated community and census-designated place (CDP) in Lawrence County, Tennessee with a small portion in both Lewis County and Maury County. The population of Summertown was 866 at the 2010 census.
Document 10: Sumner, Georgia: Sumner is a town in Worth County, Georgia, United States. The population was 309 at the 2000 census. It is part of the Albany, Georgia Metropolitan Statistical Area. Sumner High School is listed on the National Register of Historic Places.
Document 11: Mineral Township, Barry County, Missouri: Mineral Township is one of twenty-five townships in Barry County, Missouri, United States. As of the 2000 census, its population was 886.
Document 12: Southwest City, Missouri: Southwest City is a city in McDonald County, Missouri, United States. The population was 937 at the 2010 census, at which time it was a town. It is part of the Fayetteville–Springdale–Rogers, AR-MO Metropolitan Statistical Area and is located in the southwestern corner of the state of Missouri.
Document 13: Brinkley, Arkansas: Brinkley is the most populous city in Monroe County, Arkansas, United States. Located within the Arkansas Delta, Brinkley was founded as a railroad town in 1872. The city has historically been a transportation and agricultural center in the region, more recently developing a reputation for outdoors recreation and the ivory-billed woodpecker. Birding has become important to the city and region following the discovery of the ivory-billed woodpecker in 2004, a species thought to be extinct 60 years earlier. Located halfway between Little Rock and Memphis, Tennessee, the city has used the slogan "We'll Meet You Half-Way" in some of its advertising campaigns. The population was 3,188 at the 2010 census.
Document 14: Ash Township, Barry County, Missouri: Ash Township is one of twenty-five townships in Barry County, Missouri, United States. As of the 2000 census, its population was 876.
Document 15: Pleasant Ridge Township, Barry County, Missouri: Pleasant Ridge Township is one of twenty-five townships in Barry County, Missouri, United States. As of the 2000 census, its population was 429.
ground_truth: Maury County
sub_queries: Pioneer Township >> located in the administrative territorial entity Answer: Barry County
Barry County >> shares border with Answer: Lawrence County
Lawrence County >> shares border with Answer: Maury County