Question: What is the PBS station in the second largest city in the state where Yuma's Library District is located?

Knowledge 1: Yuma County Library District
The Yuma County Library District serves the population of Yuma County, Arizona. Today the library district consists of the nearly 80,000 square foot Main Library located in Yuma as well as branches in downtown Yuma, the Foothills, Somerton, San Luis, Wellton, Dateland, and Roll. The first Yuma Library, a Carnegie library, opened February 24, 1921 with 1,053 volumes and seating for 20 persons. Located in Sunset Park, the Yuma Carnegie Library underwent several expansions and renovations over the years, including a $4.2 million renovation completed in 2009. The Yuma Carnegie library still operates today as the Heritage Branch Library in downtown Yuma. [SEP] Knowledge 2: Yuma, Colorado
The City of Yuma is a Home Rule Municipality that is the most populous city in Yuma County, Colorado, United States. The population was 3,524 at the 2010 census. [SEP] Knowledge 3: Tucson, Arizona
The Tucson metro area is served by many local television stations and is the 68th largest designated market area (DMA) in the U.S. with 433,310 homes (0.39% of the total U.S.). It is limited to the three counties of southeastern Arizona (Pima, Santa Cruz, and Cochise) The major television networks serving Tucson are: KVOA 4 (NBC), KGUN 9 (ABC), KMSB-TV 11 (Fox), KOLD-TV 13 (CBS), KTTU 18 (My Network TV) and KWBA 58 (The CW). KUAT-TV 6 is a PBS affiliate run by the University of Arizona (as is sister station KUAS 27). [SEP] Knowledge 4: Tucson, Arizona
Tucson is located 118 mi (190 km) southeast of Phoenix and 60 mi (97 km) north of the United States - Mexico border. The 2010 United States Census puts the city's population at 520,116 with a metropolitan area population at 980,263. In 2009, Tucson ranked as the 32nd largest city and 52nd largest metropolitan area in the United States. A major city in the Arizona Sun Corridor, Tucson is the largest city in southern Arizona, the second largest in the state after Phoenix. It is also the largest city in the area of the Gadsden Purchase. As of 2015, The Greater Tucson Metro area has exceeded a population of 1 million.
Knowledge 1: Tucson, Arizona
Tucson is located 118 mi (190 km) southeast of Phoenix and 60 mi (97 km) north of the United States - Mexico border. The 2010 United States Census puts the city's population at 520,116 with a metropolitan area population at 980,263. In 2009, Tucson ranked as the 32nd largest city and 52nd largest metropolitan area in the United States. A major city in the Arizona Sun Corridor, Tucson is the largest city in southern Arizona, the second largest in the state after Phoenix. It is also the largest city in the area of the Gadsden Purchase. As of 2015, The Greater Tucson Metro area has exceeded a population of 1 million. [SEP] Knowledge 2: Tucson, Arizona
The Tucson metro area is served by many local television stations and is the 68th largest designated market area (DMA) in the U.S. with 433,310 homes (0.39% of the total U.S.). It is limited to the three counties of southeastern Arizona (Pima, Santa Cruz, and Cochise) The major television networks serving Tucson are: KVOA 4 (NBC), KGUN 9 (ABC), KMSB-TV 11 (Fox), KOLD-TV 13 (CBS), KTTU 18 (My Network TV) and KWBA 58 (The CW). KUAT-TV 6 is a PBS affiliate run by the University of Arizona (as is sister station KUAS 27). [SEP] Knowledge 3: Yuma County Library District
The Yuma County Library District serves the population of Yuma County, Arizona. Today the library district consists of the nearly 80,000 square foot Main Library located in Yuma as well as branches in downtown Yuma, the Foothills, Somerton, San Luis, Wellton, Dateland, and Roll. The first Yuma Library, a Carnegie library, opened February 24, 1921 with 1,053 volumes and seating for 20 persons. Located in Sunset Park, the Yuma Carnegie Library underwent several expansions and renovations over the years, including a $4.2 million renovation completed in 2009. The Yuma Carnegie library still operates today as the Heritage Branch Library in downtown Yuma. [SEP] Knowledge 4: Yuma, Colorado
The City of Yuma is a Home Rule Municipality that is the most populous city in Yuma County, Colorado, United States. The population was 3,524 at the 2010 census.
Knowledge 1: Yuma County Library District
The Yuma County Library District serves the population of Yuma County, Arizona. Today the library district consists of the nearly 80,000 square foot Main Library located in Yuma as well as branches in downtown Yuma, the Foothills, Somerton, San Luis, Wellton, Dateland, and Roll. The first Yuma Library, a Carnegie library, opened February 24, 1921 with 1,053 volumes and seating for 20 persons. Located in Sunset Park, the Yuma Carnegie Library underwent several expansions and renovations over the years, including a $4.2 million renovation completed in 2009. The Yuma Carnegie library still operates today as the Heritage Branch Library in downtown Yuma. [SEP] Knowledge 2: Tucson, Arizona
Tucson is located 118 mi (190 km) southeast of Phoenix and 60 mi (97 km) north of the United States - Mexico border. The 2010 United States Census puts the city's population at 520,116 with a metropolitan area population at 980,263. In 2009, Tucson ranked as the 32nd largest city and 52nd largest metropolitan area in the United States. A major city in the Arizona Sun Corridor, Tucson is the largest city in southern Arizona, the second largest in the state after Phoenix. It is also the largest city in the area of the Gadsden Purchase. As of 2015, The Greater Tucson Metro area has exceeded a population of 1 million. [SEP] Knowledge 3: Tucson, Arizona
The Tucson metro area is served by many local television stations and is the 68th largest designated market area (DMA) in the U.S. with 433,310 homes (0.39% of the total U.S.). It is limited to the three counties of southeastern Arizona (Pima, Santa Cruz, and Cochise) The major television networks serving Tucson are: KVOA 4 (NBC), KGUN 9 (ABC), KMSB-TV 11 (Fox), KOLD-TV 13 (CBS), KTTU 18 (My Network TV) and KWBA 58 (The CW). KUAT-TV 6 is a PBS affiliate run by the University of Arizona (as is sister station KUAS 27). [SEP] Knowledge 4: Yuma, Colorado
The City of Yuma is a Home Rule Municipality that is the most populous city in Yuma County, Colorado, United States. The population was 3,524 at the 2010 census.

Answer: KUAT-TV 6