Question: The city in which Clearwater Marine Aquarium is located is the county seat of what county?

Context paragraphs:
Clearwater County, Idaho: Clearwater County is a county located in the U.S. state of Idaho.  As of the 2010 census, the population was 8,761.  The county seat is Orofino.  Established in 1911, the county was named after the Clearwater River.

Clearwater, Florida: Clearwater is a city located in Pinellas County, Florida, United States, northwest of Tampa and St. Petersburg.  To the west of Clearwater lies the Gulf of Mexico and to the southeast lies Tampa Bay.  As of the 2010 census, the city had a population of 107,685.  Clearwater is the county seat of Pinellas County and is the smallest of the three principal cities in the Tampa-St.  Petersburg-Clearwater metropolitan area, most commonly referred to as the Tampa Bay Area.

Bagley, Minnesota: Bagley is a city in Clearwater County, Minnesota, United States.  The population was 1,392 at the 2010 census.  It is the county seat of Clearwater County.

Old Pinellas County Courthouse: The Old Pinellas County Courthouse is a historic county courthouse in Clearwater, Florida, USA.  It was designed by Francis J. Kennard and constructed in 1918.  It replaced a hastily constructed structure created to help establish Clearwater as the county seat.  It is located at 315 Court Street.  On June 25, 1992, it was added to the U.S. National Register of Historic Places.

Orofino, Idaho: Orofino (""fine gold"" [ore] in Spanish) is a city in Clearwater County, Idaho, along Orofino Creek and the north bank of the Clearwater River.  The population was 3,142 at the 2010 census, and the city is the county seat of Clearwater County.  It is the major city within the Nez Perce Indian Reservation.

Dolphin Tale: Dolphin Tale is a 2011 American 3D family drama film directed by Charles Martin Smith (his first since 2008), from a screenplay by Karen Janszen and Noam Dromi and a book of the same name.  It stars Nathan Gamble, Harry Connick, Jr., Ashley Judd, Kris Kristofferson, Cozi Zuehlsdorff in her film debut, and Morgan Freeman.  The book and film are inspired by the true story of Winter, a bottlenose dolphin that was rescued in December 2005 off the Florida coast and taken in by the Clearwater Marine Aquarium.  Winter lost her tail after becoming entangled with a rope attached to a crab trap, and was fitted with a prosthetic one.

Winter (dolphin): Winter (born circa October 2005) is a bottlenose dolphin at the Clearwater Marine Aquarium in Clearwater, Florida, US, widely known for having a prosthetic tail.  She is the subject of the book "Dolphin Tale", and the 2011 film of the same name, a dramatization of her story, and the sequel "Dolphin Tale 2".  Winter was found in the coastal waters of Florida in December 2005, caught in a crab trap, which resulted in the loss of her tail.  She was then taken to Clearwater Marine Aquarium.  The loss of her tail caused her to swim unnaturally with her tail moving side to side instead of up and down.  As a result, she was fitted with a silicone-and-plastic tail that enabled her to swim normally.  She has since become a highly popular attraction at the aquarium, which led to the film's making.  She lives in her pool with another dolphin, Hope, who is the subject of the 2014 sequel to "Dolphin Tale", "Dolphin Tale 2".

Hope (dolphin): Hope (born 2010) is a bottlenose dolphin at the Clearwater Marine Aquarium in Clearwater, Florida, USA.  She is the subject of the film "Dolphin Tale 2", a dramatization of her story and the continuing story Winter from "Dolphin Tale".  Hope was found in the Indian River Lagoon of Florida December 11, 2010 by a local fisherman.  Hope was taken to Clearwater Marine Aquarium where she resides today as the newest addition to the dolphin family.

Clearwater Marine Aquarium: The Clearwater Marine Aquarium is a 501(c)(3) non-profit organization, and aquarium in Clearwater, Florida, the hours of operation are subject to change.  It is dedicated to the rescue, rehabilitation and release of sick and injured marine animals, public education, and animal-assisted therapy and research.

Dolphin Tale 2: Dolphin Tale 2 is a 2014 American family film written and directed by Charles Martin Smith as the sequel to his 2011 film "Dolphin Tale".  Harry Connick Jr., Ashley Judd, Nathan Gamble, Cozi Zuehlsdorff, Kris Kristofferson, Morgan Freeman, Juliana Harkavy, Austin Stowell, Betsy Landin, and Austin Highsmith all reprise their roles from the first film, while Lee Karlinsky, Julia Jordan, Taylor Blackwell, and Bethany Hamilton join the cast.  It was released on September 12, 2014 and tells the story of another dolphin at the hospital named "Hope".  After Winter's elderly companion and surrogate mother, Panama, dies, Winter's future is in jeopardy, unless Sawyer, Clay, Hazel, and the rest of the Clearwater Marine Aquarium team can find a new companion for her.

Supporting paragraphs: Clearwater Marine Aquarium Clearwater, Florida
Answer: Pinellas County