IN: The Aquabats are an American rock band formed in Orange County, California in 1994. Throughout many fluctuations in the group's line-up, singer The MC Bat Commander and bassist Crash McLarson have remained the band's two constant fixtures. Since 2006, The Aquabats' members also include keyboardist Jimmy the Robot, drummer Ricky Fitness and guitarist Eagle "Bones" Falconhawk. Easily identified by their masks and matching costumes, The Aquabats are perhaps most recognized for their comedic persona in which they claim to be crime-fighting superheroes.

By late 1996, propelled by the multi-platinum success of No Doubt and Sublime, ska had broken through into the American mainstream to become one of the most popular forms of alternative music. With record labels now turning their attention towards ska bands, The Aquabats were promptly signed to Goldenvoice Records and released their second album The Fury of The Aquabats! in October 1997 through Time Bomb Recordings. While still predominantly a ska album, The Fury showcased a more ambitious musical streak than The Return, incorporating stronger elements of punk and surf, as well as featuring instrumentals, parodies of ragtime and tango music, and a variety of unconventional instruments including sousaphones and banjos. Released at the commercial height of the American ska revival, The Fury soon became The Aquabats' most successful album to date, peaking at number 172 on the Billboard 200 and number 12 on its Top Heatseekers, while lead single "Super Rad!" found regular airplay on MTV and Los Angeles' influential KROQ-FM. On July 25, 1998, they fought the alien rock band GWAR during The Ska Parade.  The Aquabats spent 1997 and 1998 touring extensively behind The Fury, carrying out both supporting and headlining tours of the United States and traveling internationally as part of the 1998 Warped Tour. By this time, the band had settled into a stable touring line-up of Jacobs (The Bat Commander), Larson (Crash McLarson), Terry (Catboy), drummer Travis Barker (The Baron Von Tito), guitarists Charles Gray (Ultra Kyu) and Courtney Pollock (Chainsaw, the Prince of Karate), trumpeter Adam Deibert (Prince Adam) and keyboardist/saxophonist James Briggs (Jaime the Robot, later Jimmy the Robot). This line-up would last The Aquabats up until 1998, when, in the middle of a tour with pop punk trio Blink-182, Blink unexpectedly fired their drummer Scott Raynor and recruited Barker as a last-minute replacement to sit in for the rest of the tour. By the tour's close, the band was so impressed with Barker's performance that they invited him to join Blink-182 as a full-time member, an offer which Barker accepted, amicably parting ways with The Aquabats. Barker was succeeded by Gabe Palmer (Doctor Rock), solidifying a line-up which would last the remainder of the decade.  With the band now finding enough success to generate both an adequate income and media visibility, Jacobs -- a former child actor with ties in the entertainment industry -- began to conceive the idea of adapting The Aquabats' superhero mythology into a television series. After pitching the concept to several networks, Buena Vista Television eventually agreed to help produce a short live-action pilot in 1998, directed by comedian Bobcat Goldthwait. Titled simply The Aquabats!, the pilot followed the fictional misadventures of the eight band members in an intentionally campy style similar to Saturday morning cartoon shows. The pilot, which has yet to be made available for public viewing, failed to attract any network interest and was later openly disowned by the band themselves.

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OUT: The Aquabats were promptly signed to Goldenvoice Records and released their second album The Fury of The Aquabats! in October 1997

input: The Merchandise Mart was modernized in the late 1950s and 1960s. The Indian chiefs were removed and replaced with concrete plates in 1961, of minimal note to onlookers as skyscrapers did not rise on the north side of the river as predicted. Some of the carvings were later found in a suburban backyard and auctioned in 2014. In 1962, an entrance canopy was constructed over the south for vehicle use.  In 1977, Skidmore, Owings & Merrill designed the Chicago Apparel Center, located on the west side of Orleans Street, which increased the Merchandise Mart's total floor space to 6,200,000 square feet (580,000 m2). Making use of plazas, esplanades and overlooks employed the waterfront location for pedestrian pleasure. In 1988, Helmut Jahn designed an enclosed pedestrian walking bridge over Orleans Street connecting the Mart and the Apparel Center.  After a 10-year, $100 million modernization in the late 1980s that included public utility upgrades, Beyer Blinder Belle's commission in 1989 was to create additional perimeter entrances and restore the display windows, main entrance and lobby. On the south facade, the drive-through canopy was removed and two smaller doorways aside the main entrance were added. Display windows, painted over during the earlier modernization campaign, were restored with clear glass to showcase merchant's wares. New main and corner entrances were added to the rear facade, and the loading dock that occupied the north portion of the first floor of the river level was removed in order to use the bottom deck of North Bank Drive. Improvements to the lobby included restoration of the original glass curtain wall over the entrance, shop fronts and reception desk using terrazzo floors and wall sconces influenced by the original design. The project was completed in 1991.  In November 2007, the building received LEED for Existing Buildings Silver recognition.

Answer this question "How large is it?"
output:
the Merchandise Mart's total floor space to 6,200,000 square feet (580,000 m2).