Question: The arena home to the Cleveland Monsters, replaced a stadium opened in what year?

<P0-S0> Richfield Coliseum, also known as the Coliseum at Richfield, was an indoor arena located in Richfield Township, between Cleveland and Akron, Ohio. <P0-S1>  It opened in 1974 as a replacement for the Cleveland Arena, and had a seating capacity of 20,273 for basketball. <P0-S2>  It was the main arena for the Northeast Ohio region until 1994, when it was replaced by Quicken Loans Arena in downtown Cleveland. <P0-S3>  The Coliseum stood vacant for five years before it was purchased and demolished in 1999 by the National Park Service. <P0-S4>  The site of the building was converted to a meadow and is now part of Cuyahoga Valley National Park. <SEP> <P1-S0> Quicken Loans Arena, commonly known as "The Q", is a multi-purpose arena in downtown Cleveland, Ohio, United States. <P1-S1>  The building is the home of the Cleveland Cavaliers of the National Basketball Association (NBA), the Cleveland Monsters of the American Hockey League, and the Cleveland Gladiators of the Arena Football League. <P1-S2>  It also serves as a secondary arena for Cleveland State Vikings men's and women's basketball. <SEP> <P2-S0> Cleveland Stadium, commonly known as Municipal Stadium or Lakefront Stadium, was a multi-purpose stadium located in Cleveland, Ohio. <P2-S1>  It was one of the early multi-purpose stadiums, built to accommodate both baseball and football. <P2-S2>  The stadium opened in 1931 and is best known as the long-time home of the Cleveland Indians of Major League Baseball, from 1932 to 1993, and the Cleveland Browns of the National Football League (NFL), from 1946 to 1995, in addition to hosting other teams, sports, and being a regular concert venue. <P2-S3>  The stadium was a four-time host of the Major League Baseball All-Star Game, one of the host venues of the 1948 and 1954 World Series, and the site of the original Dawg Pound, Red Right 88, and The Drive. <SEP> <P3-S0> Morse Field at Harold Alfond Sports Stadium is a 10,000-seat multi-purpose stadium in Orono, Maine. <P3-S1>  The stadium opened as Alumni Field in 1947 and underwent extensive renovations from 1996 to 1998. <P3-S2>  It is home to the University of Maine Black Bears football team. <P3-S3>  The wood and steel grandstands, built in the 1940s, were condemned and demolished in 1996, replaced with the current east grandstand, along with a temporary structure on the west side, adjacent to Alfond Arena. <P3-S4>  The current west grandstand, lights, press and luxury levels, as well as concessions and restroom amenities were completed prior to the 1998 season. <P3-S5>  The stadium was rededicated to Harold Alfond, a longtime Maine booster, at Maine's first home night game on September 12, 1998, a 52-28 win over New Hampshire in the Battle for the Brice-Cowell Musket. <P3-S6>  The field is named for Phillip and Susan Morse, who donated the lights, original Astroturf and scoreboard. <P3-S7>  In the summer of 2008, new FieldTurf was installed to replace the old AstroTurf. <P3-S8>  In 2014, a 20'x32' high-definition video-board replaced the matrix display installed in 1998, and a contemporary scoreboard was installed on the north end.