Question: What is the birthplace of the director of Bike Boy ?

full_context: Document 1: Brady Street Bridge: The Brady Street Bridge, also known as the South 22nd Street Bridge, was a steel bowstring arch bridge in Pittsburgh, Pennsylvania, which crossed over the Monongahela River at South 22nd Street. It was replaced by the Birmingham Bridge in 1976, and was demolished on May 29, 1978. The bridge's main span was a tied arch with a suspended road deck, with two through-truss side spans, carrying two traffic lanes between Brady Street on the Pittsburgh side and South 22nd Street on the south side. Approach viaducts were built at either end. The bridge was built by the Schultz Bridge and Iron Company.
Document 2: Highland Park Bridge (1902): The 1902 Highland Park Bridge was a cantilever through truss that carried two streetcar tracks across the Allegheny River and Sixmile Island between the Pittsburgh neighborhood of Highland Park and Sharpsburg, Pennsylvania. It was replaced by the Highland Park Bridge in 1938.
Document 3: Eating Too Fast: Eating Too Fast is a 1966 Andy Warhol film made at The Factory. It was originally titled Blow Job #2 and features art critic and writer Gregory Battcock (1937–1980). The film is 67 minutes long and is, in effect, a black and white sound film remake of Warhol's "Blow Job" (1964). Battcock had previously appeared in Warhol's films "Batman Dracula" (1964) and "Horse" (1965).
Document 4: Washington Crossing Bridge (Pittsburgh): The Washington Crossing Bridge, commonly known as the Fortieth Street Bridge, is an arch bridge that carries vehicular traffic across the Allegheny River between the Pittsburgh neighborhood of Lawrenceville and the suburb of Millvale.
Document 5: Andy Warhol Bridge: The bridge was renamed for Warhol on March 18, 2005, as part of the tenth anniversary celebration for the Andy Warhol Museum. The museum is nearby at 117 Sandusky Street, a street which leads to the bridge from the north side of the river on Pittsburgh's North Shore.
Document 6: Bike Boy: Bike Boy is a 1967 American avant garde film directed by Andy Warhol, and was shown, for initial viewings, at the New Andy Warhol Garrick Theatre, at 152 Bleecker Street, Manhattan, New York City. The film has a bit part by Valerie Solanas.
Document 7: 31st Street Bridge: The William Raymond Prom Memorial Bridge, commonly known as the 31st Street Bridge, is an arch bridge that carries vehicular traffic across the Allegheny River between the Pittsburgh neighborhoods of Troy Hill and the Strip District. The bridge passes over, but does not serve, Washington's Landing, which is connected to the mainland by the 30th Street Bridge. Sidewalks along the bridge feature viewing platforms.
Document 8: Camp (1965 film): Camp (1965) is a feature-length underground film directed by Andy Warhol in October 1965 at The Factory. The film stars Gerard Malanga, Baby Jane Holzer, Tally Brown, Mario Montez, Jack Smith, Paul Swan, Dorothy Dean, and Tosh Carillo.
Document 9: Harlot (1964 film): Harlot (1964) is a feature-length underground film directed by Andy Warhol, written by Ronald Tavel, and featuring Mario Montez lounging on a sofa, eating bananas, with Gerard Malanga in a tuxedo, and with Tavel, Billy Name, and Harry Fainlight having an off-screen discussion. This was Warhol's first sync-sound movie, filmed in December 1964 with his new Auricon camera.
Document 10: Blow Job (film): Blow Job is a silent film directed by Andy Warhol, that was filmed in January 1964. It depicts the face of an uncredited DeVeren Bookwalter as he apparently receives fellatio from an unseen partner. While shot at 24 frames per second, Warhol specified that it should be projected at 16 frames per second, slowing it down by a third.
Document 11: Petroleum Street Bridge: The Petroleum Street Bridge is a girder bridge connecting the North Side and South Side neighborhoods of Oil City, Pennsylvania and crosses the Allegheny River. The bridge sits just downstream from the confluence of Oil Creek and the Allegheny River. The 1995 structure carries two lanes of U.S. Route 62 and was built during a decade of major refurbishments of Upper Allegheny crossings. Previously, a 1910 truss bridge stood on the site; this structure replaced an earlier wooden bridge.
Document 12: South Tenth Street Bridge: South Tenth Street Bridge, most often called the Tenth Street Bridge, but officially dubbed the Philip Murray Bridge, is a suspension bridge spanning the Monongahela River in Downtown Pittsburgh, Pennsylvania. The bridge was renamed on Labor Day 2007 for Philip Murray, the first president of the United Steelworkers of America.
Document 13: 30th Street Bridge: The 30th Street Bridge, is a girder bridge that carries vehicular traffic across the Allegheny River between the Pittsburgh neighborhoods of Troy Hill and Herrs Island (known by the moniker of Washington's Landing). This is the fourth bridge that has stood on this site. A wooden 19th Century bridge was washed away during an 1882 flood. This was replaced by an arch bridge that spanned the entire width of the Allegheny River; after a 1921 fire destroyed the span across the main channel, the 31st Street Bridge was constructed as a replacement, and this bridge was again relegated to taking traffic to Herrs Island. A 1939 truss bridge then stood on this site, and it was replaced by the current structure as part of the redevelopment of the island to feature condominiums and a business park instead of warehouses and stockyards.
Document 14: Eat (film): Eat (1963) is a 45-minute underground film created by Andy Warhol and featuring painter Robert Indiana, filmed on Sunday, February 2, 1964 in Indiana's studio. The film was first shown by Jonas Mekas on July 16, 1964 at the Washington Square Gallery at 530 West Broadway.
Document 15: Kitchen (1966 film): Kitchen is a 1966 feature-length underground film directed by Andy Warhol and Ronald Tavel, and starring Edie Sedgwick, Rene Ricard, Tavel, Roger Trudeau, David McCabe, Donald Lyons, and Electrah. The entire film takes place in the New York City kitchen of Bud Wirtschafter, the sound man.
ground_truth: Pittsburgh
sub_queries: Bike Boy >> director Answer: Andy Warhol
Andy Warhol >> place of birth Answer: Pittsburgh