Question: The 1985 NAIA Men's Division I Basketball Tournament was held in March at an Arena that has how many indoor seats ?

Context paragraphs:
2001 NAIA Division I Men's Basketball Tournament: The 64th NAIA Men's Division I Basketball Tournament was held in March at the Tulsa Convention Center in Tulsa, Oklahoma.  It was the second tournament held in the Tulsa Convention Center and the last tournament to be held in Tulsa, Oklahoma.  The 64th annual NAIA basketball tournament featured 32 teams playing in a single-elimination format.  2001 would bring four new teams to the NAIA National Semifinals.  The first tournament since 1969 tournament to do so.  (It would be the 6th time in tournament history this has happened; previous years were the inaugural year 1937, 1945, 1947, 1965, 1969).  It surpasses the 15 year gap between a fresh set of semi-finalist that was between 1947-1969.  It would be the only time this would happen outside of Kansas City.

1981 NAIA Division I Men's Basketball Tournament: The 1981 NAIA Men's Division I Basketball Tournament was held in March at Kemper Arena in Kansas City, Missouri.  The 44th annual NAIA basketball tournament featured 32 teams playing in a single-elimination format.  The championship game featured Bethany Nazarene College and the University of Alabama in Huntsville.  It was the first time the championship game that went into overtime.  Bethany Nazarene edged out Alabama-Huntsville with the final score of 86-85 (OT).  1981 was also the first year the NAIA held a women's national basketball championship tournament.  For the second time since 1963, the year the award was established, there was a tie for the leading scorer.  Todd Thurman, and George Torres both scored 104 over course of the 1981 tournament.  There have been no ties since.  And for the first time since the Coach of the Year Award was established, Ken Anderson, won Coach of the Year for the second time.  No other coach has won the award twice.

2004 NAIA Division I Men's Basketball Tournament: The 2004 Buffalo Funds - NAIA Men's Division I Basketball Tournament was held in March at Municipal Auditorium in Kansas City, Missouri.  This was the 67th annual NAIA DI basketball tournament and featured 32 teams playing in a single-elimination format.  This was the third year the tournament was held in Kansas City.  The 2004 NAIA National Championship game featured the #1 ranked Cougars of Mountain State and the #6 ranked Eagles of Concordia University (Calif.).  This match up was a repeat of the 2003 tournament.  The Cougars defeated the Eagles 74–70.  The other teams that rounded out the NAIA National Semifinals were Georgetown College (Ky.) and University of Mobile (Ala.), respectively.

1993 NAIA Division I Men's Basketball Tournament: The 1993 NAIA Men's Division I Basketball Tournament was held in March at Kemper Arena in Kansas City, Missouri.  The 56th annual NAIA basketball tournament featured 32 teams playing in a single-elimination format.  1993 marked the last time NAIA Division 1 Tournament was conducted at Kemper Arena.

1985 NAIA Division I Men's Basketball Tournament: The 1985 NAIA Men's Division I Basketball Tournament was held in March at Kemper Arena in Kansas City, Missouri.  The 48th annual NAIA basketball tournament featured 32 teams playing in a single-elimination format.

1974 NAIA Division I Men's Basketball Tournament: The 1974 NAIA Men's Division I Basketball Tournament was held in March at Municipal Auditorium in Kansas City, Missouri.  The 37th annual NAIA basketball tournament featured 32 teams playing in a single-elimination format.  It would be the last tournament to be played in Municipal until 2002.  In 1975 would be held in the new Kemper Arena.  Kemper would host the NAIA Tournament until 1993, when the NAIA would move the tournament and its offices to Tulsa.

Kemper Arena: Kemper Arena is a 19,500-seat indoor arena located in Kansas City, Missouri.  It has hosted NCAA Final Four basketball games, professional basketball and hockey teams, professional wrestling events, the 1976 Republican National Convention, concerts, and is the ongoing host of the American Royal livestock show.

2007 NAIA Division I Men's Basketball Tournament: The 2007 Buffalo Funds - NAIA Men's Division I Basketball Tournament was held from March 14 to 20 at Municipal Auditorium in Kansas City, Missouri.  This was the 70th annual NAIA basketball tournament and features 32 teams playing in a single-elimination format.  This tournament had the most total points scored for both teams in one game in the history of the NAIA tournament.  Totaling 243pts when Concordia (Calif.) got 124pts and beat Robert Morris (Ill.) who has 119pts.  That game went into 4 overtimes.  (The longest game was a 5OT game back in 1978 when Grand Canyon (Ariz.) beat Central State (Ohio) 88-82.)  Concordia would go on to be the 2007 runner-up to Oklahoma City University.  Oklahoma City University would beat Concordia 79 to 71.

1975 NAIA Division I Men's Basketball Tournament: The 1975 NAIA Men’s Division I Basketball Tournament was held in March at Kemper Arena in Kansas City, Missouri.  The 38th annual NAIA basketball tournament featured 32 teams playing in a single-elimination format.  This would be the first tournament played in Kemper Arena.

1999 NAIA Division I Men's Basketball Tournament: The 1999 NAIA Men's Division I Basketball Tournament was held in March at Donald W. Reynolds Center in Tulsa, Oklahoma, and the only time for now NAIA Tournament.  The 62nd annual NAIA basketball tournament featured 32 teams playing in a single-elimination format.

Supporting paragraphs: 1985 NAIA Division I Men's Basketball Tournament Kemper Arena
Answer: 19,500-seat