Question: The 1989 Pittsburgh Pirates season was the 108th season of the Pittsburgh Pirates franchise; the 103rd in the National League, it was their 20th season at Three Rivers Stadium, Three Rivers Stadium was a multi-purpose stadium located in Pittsburgh, in which state?

Context paragraphs:
1986 Pittsburgh Pirates season: The 1986 Pittsburgh Pirates season was the 105th season of the Pittsburgh Pirates franchise; and their 100th in the National League.  This was their 17th season at Three Rivers Stadium.  The Pirates finished sixth and last in the National League East with a record of 64–98.  This was also the rookie season of left fielder Barry Bonds, who led the Pirates with 36 stolen bases and finished second on the club with 16 home runs.

1994 Pittsburgh Pirates season: The 1994 Pittsburgh Pirates season was their 113th season; the 108th in the National League.  This was their 25th season at Three Rivers Stadium.  The Pirates finished the shortened season third in the National League Central with a record of 53–61.  They hosted the 1994 Major League Baseball All-Star Game in the 125th Anniversary season of Major League Baseball.

1988 Pittsburgh Pirates season: The 1988 Pittsburgh Pirates season was the 107th season of the Pittsburgh Pirates franchise; the 102nd in the National League.  This was their 19th season at Three Rivers Stadium.  The Pirates finished second in the National League East with a record of 85–75.

1982 Pittsburgh Pirates season: The 1982 Pittsburgh Pirates season was the 101st season of the Pittsburgh Pirates franchise; their 96th in the National League.  This was their 13th season at Three Rivers Stadium.  The Pirates finished fourth in the National League East with a record of 84–78.

1989 Pittsburgh Pirates season: The 1989 Pittsburgh Pirates season was the 108th season of the Pittsburgh Pirates franchise; the 103rd in the National League.  This was their 20th season at Three Rivers Stadium.  The Pirates finished fifth in the National League East with a record of 74–88.

1984 Pittsburgh Pirates season: The 1984 Pittsburgh Pirates season was the 103rd season of the franchise; the 98th in the National League.  This was their 15th season at Three Rivers Stadium.  The Pirates finished sixth and last in the National League East with a record of 75–87.

1971 Pittsburgh Pirates season: The 1971 Pittsburgh Pirates season was the 90th season for the Pittsburgh Pirates franchise; their 85th in the National League.  It involved the Pirates finishing first in the National League East with a record of 97 wins and 65 losses.  They defeated the San Francisco Giants three games to one in the National League Championship Series and beat the Baltimore Orioles four games to three in the World Series.  The Pirates were managed by Danny Murtaugh, and played their first full season at Three Rivers Stadium, which had opened in July the year before.

1987 Pittsburgh Pirates season: The 1987 Pittsburgh Pirates season was the 106th season of the Pittsburgh Pirates franchise; and their 101st season in the National League.  This was their 18th season at Three Rivers Stadium.  The Pirates finished fifth in the National League East with a record of 80–82.

1983 Pittsburgh Pirates season: The 1983 Pittsburgh Pirates season was the 102nd season of the Pittsburgh Pirates franchise; their 97th in the National League.  This was their 14th season at Three Rivers Stadium.  The Pirates finished second in the National League East with a record of 84–78.

Three Rivers Stadium: Three Rivers Stadium was a multi-purpose stadium located in Pittsburgh, Pennsylvania, from 1970 to 2000.  It was home to the Pittsburgh Pirates of Major League Baseball (MLB) and the Pittsburgh Steelers of the National Football League (NFL).

Supporting paragraphs: 1989 Pittsburgh Pirates season Three Rivers Stadium
Answer: Pennsylvania