Question: In which county the Nashua High School is situated?

full_context: Document 1: Nashua High School South: Nashua High School South, formerly Nashua High School, is a public high school located in Nashua, New Hampshire. The school's current location was erected in 1975 with its first class graduating in June 1976. The school was remodeled between 2002 and 2004 when a second school, Nashua High School North, was built. The existing high school building was renamed Nashua High School South. The school serves approximately 2200 students, making it the largest public high school in New Hampshire, and the second largest high school overall, after the private Pinkerton Academy.
Document 2: Richard Seigler: Richard Joseph Seigler is the current defensive line assistant coach of the Portland State Vikings college football team and former NCAA All-American and NFL Linebacker. He was drafted out of Oregon State University in 2004 by the San Francisco 49ers. In November 2005, he was acquired by the Pittsburgh Steelers, playing with them during their Super Bowl XL winning season. He finished up his playing years with the Toronto Argonauts of the CFL before moving on to his coaching career. Seigler played under the tutelage of National Championship Head Coach Dennis Erickson and Mike Riley in the college ranks. In the NFL, he played under Super Bowl Championship coaches Mike Tomlin and Bill Cowher.
Document 3: Hillsborough County, New Hampshire: Hillsborough County is the most populous county in the U.S. state of New Hampshire. As of the 2010 census, the population was 400,721. The population was estimated at 407,761 in 2016. Its county seats are Manchester and Nashua. Hillsborough is northern New England's most populous county as well as its most densely populated.
Document 4: Hillsborough (CDP), New Hampshire: Hillsborough (frequently spelled Hillsboro) is a census-designated place (CDP) and the main village in the town of Hillsborough in Hillsborough County, New Hampshire, United States. The population of the CDP was 1,976 at the 2010 census, out of 6,011 people in the entire town of Hillsborough.
Document 5: Ray Rice: Raymell Mourice Rice (born January 22, 1987) is a former American football running back who played his entire professional career with the Baltimore Ravens of the National Football League (NFL). He played college football for Rutgers, and was drafted by the Ravens in the second round of the 2008 NFL Draft. He is ranked as the Ravens' second all-time leading rusher behind Jamal Lewis, and is also second in rushing attempts and touchdowns, and third in combined touchdowns. He won Super Bowl XLVII with the team at the conclusion of the 2012 NFL season.
Document 6: Nigerian Institute of American Football: The Nigerian Institute of American Football was founded in June, 2011 at Ahmadu Bello University in Zaria, Nigeria. The Institute was founded by three American former-athletes. Daryl Hayes (an assistant coach at Shepherd University of West Virginia), Ricardo Dickerson (former football standout at the University of Maryland/Oakland Raiders), and Gregory Hendricks (former professional basketball player/coach) collaborated to bring American football to Nigeria. The three, along with Professional Basketball player and Nigerian National Basketball Team Captain Ejike Ugboaja, found a unique niche for the football while leading basketball camps in Ejike’s homeland of Nigeria. The Ejike Ugboaja Foundation has operated basketball camps for young Nigerian players for many years. With the number of Nigerian descendants currently playing football at the collegiate and professional levels, it seemed a natural fit to begin teaching the sport in Nigeria.
Document 7: Richard Sherman (American football): Richard Kevin Sherman (born March 30, 1988) is an American football cornerback for the Seattle Seahawks of the National Football League (NFL). He played college football at Stanford, both as a wide receiver and as a cornerback, and was drafted by the Seahawks in the fifth round of the 2011 NFL Draft.
Document 8: Nashua, New Hampshire: Nashua is a city in Hillsborough County, New Hampshire, United States. As of the 2010 census, Nashua had a total population of 86,494, making it the second-largest city in the state (and in the three northern New England states) after Manchester. As of 2016 the population had risen to an estimated 87,882.
Document 9: Concord, New Hampshire: Concord is the capital city of the U.S. state of New Hampshire and the county seat of Merrimack County. As of the 2010 census, its population was 42,695.
Document 10: Rich Miano: Richard James Miano (born September 3, 1962) is a former American football defensive back who played 11 seasons for three teams in the National Football League. Rich was a walk-on for University of Hawaii team in 1981 and became an all WAC defensive back in 1983 and 1984. In 1985 Rich was drafted in the 6th round by the New York Jets with whom he played six seasons. After missing the entire 1990 season with a knee injury, Miano went to the Philadelphia Eagles where he played four seasons. In 1995, his final season in the NFL, he played for the Atlanta Falcons. Upon retirement from the NFL, Miano moved back to his home in Honolulu, Hawaii where he became the Associate Head Coach with the University of Hawaii, where he played his college career. When head coach Greg McMackin resigned in 2011, Miano became the head coach for the Henry J. Kaiser High School Cougars. There he won the HHSAA state championship with a 13-1 record.
Document 11: New Boston, New Hampshire: New Boston is a town in Hillsborough County, New Hampshire, United States. The population was 5,321 at the 2010 census. New Boston is home to the annual Hillsborough County Agricultural Fair and the Molly Stark Cannon.
Document 12: Richie Incognito: Richard Dominick Incognito Jr. (born July 5, 1983) is an American football guard for the Buffalo Bills of the National Football League (NFL). Before playing for the NFL, he played college football for the University of Nebraska. Incognito was drafted by the St. Louis Rams in the third round of the 2005 NFL Draft and played for them through the 2009 season. Incognito played for the Buffalo Bills during the 2009 season and the Miami Dolphins from 2010 to 2013.
Document 13: Manchester, New Hampshire: Manchester is the largest city in the U.S. state of New Hampshire, the eleventh largest city in New England, and as of 2016 the largest city in northern New England, an area comprising the states of Maine, New Hampshire, and Vermont. As of the 2010 census, the city had a population of 109,565, and its estimated 2016 population was 110,506. It is located in Hillsborough County along the banks of the Merrimack River, which divides the city into eastern and western sections. Manchester is near the northern end of the Northeast megalopolis. It was first named by the merchant and inventor Samuel Blodget (after whom Samuel Blodget Park and Blodget Street in Manchester's North End are named). Blodget's vision was to create a great industrial center similar to that of the original Manchester in England, which was the world's first industrialized city.
Document 14: Kole Ayi: Bamikole Richard Ayi (born September 27, 1978) is a former American football linebacker who played two seasons in the National Football League with the New England Patriots and St. Louis Rams. Ayi played college football at the University of Massachusetts and attended Nashua High School in Nashua, New Hampshire. He was a member of the new England Patriots team that won Super Bowl XXXVI.
Document 15: Ty Law: Tajuan E. "Ty" Law (born February 10, 1974) is a former American football cornerback who played fifteen seasons in the National Football League (NFL). He played college football at the University of Michigan. He was drafted by the New England Patriots 23rd overall in the 1995 NFL Draft. Law is a two-time All-Pro, a five-time Pro Bowl selection, a Pro Bowl MVP, and has won three Super Bowls with the Patriots. His 53 career interceptions rank 22nd all-time in NFL history. He is also widely regarded as one of the best Patriots defensive backs of all time. Law was added to the New England Patriots Hall of Fame as the 20th member.
ground_truth: Hillsborough County