Question: What county was the 1999 TransWorld Diversified Services Indy 200 held in?

Context paragraphs:
2008 Firestone Indy 200: The 2008 Firestone Indy 200 was the eleventh round of the 2008 IndyCar Series season.  It took place on July 12, 2008, at the Nashville Superspeedway.  It was the eighth and final running of the Firestone Indy 200.

Firestone Indy 200: The Firestone Indy 200 was an Indy Racing League IndyCar Series race held at Nashville Superspeedway in Lebanon, Tennessee.

Bay Lake, Florida: Bay Lake is a city in Orange County, Florida, United States.  The population was 47 at the 2010 census.  It is named after a lake located east of the Magic Kingdom.  All four of the Walt Disney World theme parks, and one of the two water parks, are located in Bay Lake.

McCormack Motorsports: McCormack Motorsports is a former Indy Racing League team owned by Dennis McCormack that operated from 1996 to 2001.  Based in Avon, Indiana, the team debuted at the 1996 Indianapolis 500 with a car for Randy Tolsma, however, it failed to make the field.  For the 1996–1997 season, the team used 3 different drivers.  Raul Boesel drove the entire 1998 season for the team and finished 20th in points with a best finish of 8th.  1999 was another season of instability as the team saw 4 different drivers start a race for them and one other driver, Nick Firestone, fail to get his McCormack entry into the Indy 500.  2000 again saw 3 different drivers drive for the team and relative instability and lack of funding, along with two of its cars, this time driven by Ronnie Johncox and Robby Unser again fail to qualify for the Indy 500.  This was largely due to a disastrous experiment with using the uncommon Riley & Scott chassis.  The team also formed an alliance with the Byrd brothers of Byrd Motorsports and fielded the #30 car for a revolving door of drivers including Johncox, Jon Herb, and J. J. Yeley.  2001 was the team's final season.  The team shut down after its car driven by Brandon Erwin failed to qualify for the Indy 500 and then the next week at the Casino Magic 500, where they were woefully off the pace.  The team's best finish was a 5th place by Boesel at the 1999 Indy 200 at Walt Disney World Speedway.

Doug Didero: Doug Didero (born August 18, 1960 in Hamilton, Ontario and currently living in Mooresville, North Carolina), is a former driver in the Indy Racing League.  He raced in the 1999–2000 seasons with 6 career starts.  His best career IRL finish was in 14th position in the Delphi Indy 200 at Walt Disney World Speedway.  In 1991–1992 he raced 3 times in the NASCAR Busch Series.

Buzz Calkins: Bradley "Buzz" Calkins Jr. (born May 2, 1971 in Denver, Colorado) is a former Indy Racing League driver.  After a successful run in Indy Lights from 1993 to 1995 where he finished 11th, 10th, and 6th in his three seasons, he and his Bradley Motorsports team purchased a 1995 Reynard chassis to compete in the inaugural season of the IRL.  He won the series' inaugural race, the 1996 Indy 200 at Walt Disney World ahead of Tony Stewart and was that year's league co-champion with Scott Sharp.  He competed in the Indianapolis 500 six times, with a best finish of 10th in 1998.  His win in the series' first race would end up to be his only IRL win.  He drove until 2001 when he retired and ventured into the business world.

Niclas Jönsson: Niclas ("Nic") Jönsson (born August 4, 1967, Bankeryd) is a Swedish racing driver, currently driving in the FIA World Endurance Championship.  He drove in the Indy Racing League in the 1999 and 2000 seasons with 4 career starts.  His best career IRL finish was in 12th position in the 2000 Delphi Indy 200 held at Walt Disney World Speedway.  He made 1 NASCAR Busch Series (now Xfinity Series) start at Montreal in August 2007, he started 8th, led 5 laps, and finished 12th in the #28 car for Jay Robinson Racing.

1999 TransWorld Diversified Services Indy 200: The 1999 TransWorld Diversified Services Indy 200 was the first round of the 1999 Indy Racing League season.  The race was held on January 24, 1999 at the 1.000 mi Walt Disney World Speedway in Bay Lake, Florida.

1997 Indy 200 at Walt Disney World: The 1997 Indy 200 at Walt Disney World was the third round of the 1996–1997 Indy Racing League.  The race was held on January 25, 1997, at the 1.000 mi Walt Disney World Speedway in Bay Lake, Florida.  It was the first race with the new chassis and 4000 cc naturally aspirated engines.  It did not make the scheduled 200 laps; it was called off on lap 149 due to heavy rain.

1998 Indy 200 at Walt Disney World: The 1998 Indy 200 at Walt Disney World was the first round of the 1998 Indy Racing League season.  The race was held on January 24, 1998 at the 1.000 mi Walt Disney World Speedway in Bay Lake, Florida.  As in 1997, rain hampered the event, this time forcing to cancel the qualifying session.

Supporting paragraphs: 1999 TransWorld Diversified Services Indy 200 Bay Lake, Florida
Answer: Orange County