Question: What is the pyramid building in the city where Voice Farm is located?

full_context: Document 1: Voice Farm: Voice Farm is a musical group and video collective based in San Francisco. Vocalist Charly Brown and sound designer Myke Reilly form the core of the group, who met in 1980.
Document 2: 580 California Street: 580 California Street is a high rise office building completed in 1987 in the Financial District of San Francisco, California. The postmodern, , 23 story tower is bordered by Kearny Street and California Street, and is topped with three faceless, twelve foot tall statues, on each side of the building on the twenty-third floor. The art installation is entitled "The Corporate Goddesses" by Muriel Castanis, the late designer and creator of the sculptures.
Document 3: William Pereira: William Leonard Pereira (April 25, 1909 – November 13, 1985) was an American architect from Chicago, Illinois, who was noted for his futuristic designs of landmark buildings such as the Transamerica Pyramid in San Francisco. Remarkably prolific, he worked out of Los Angeles, and was known for his love of science fiction and expensive cars, but mostly for his unmistakable style of architecture, which helped define the look of mid-20th century America.
Document 4: Washington University in St. Louis: Washington University has a large number of student-run musical groups on campus, including 12 official a cappella groups. The Pikers, an all-male group, is the oldest such group on campus. The Greenleafs, an all-female group is the oldest (and only) female group on campus. The Mosaic Whispers, founded in 1991, is the oldest co-ed group on campus. They have produced 9 albums and have appeared on a number of compilation albums, including Ben Folds' Ben Folds Presents: University A Cappella! The Amateurs, who also appeared on this album, is another co-ed a cappella group on campus, founded in 1991. They have recorded seven albums and toured extensively. After Dark is a co-ed a cappella group founded in 2001. It has released three albums and has won several Contemporary A Capella Recording (CARA) awards. In 2008 the group performed on MSNBC during coverage of the vice presidential debate with specially written songs about Joe Biden and Sarah Palin. The Ghost Lights, founded in 2010, is the campus's newest and only Broadway, Movies, and Television soundtrack group. They have performed multiple philanthropic concerts in the greater St. Louis area and were honored in November 2010 with the opportunity to perform for Nobel Laureate Douglass North at his birthday celebration.
Document 5: Vocolot: Vocolot began in 1988, when singer-songwriter Linda Hirschhorn informally assembled a group of musicians to record some of the songs she had written for four- and five-part vocal harmonies. When they had finished recording those, for the "Gather Round" album, she asked the singers to join her in an ongoing group. The founding members were Rosalind Glazer, Max Ventura, Tay Holden and Linda Hirschhorn.
Document 6: Transamerica Pyramid: The Transamerica Pyramid at 600 Montgomery Street between Clay and Washington Streets in the Financial District of San Francisco, California, United States, is a 48 - story postmodern building and the second - tallest skyscraper in the San Francisco skyline. Its height will be surpassed by Salesforce Tower, currently under construction. The building no longer houses the headquarters of the Transamerica Corporation, which moved its U.S. headquarters to Baltimore, Maryland, but it is still associated with the company and is depicted in the company's logo. Designed by architect William Pereira and built by Hathaway Dinwiddie Construction Company, at 853 feet (260 m), on completion in 1972 it was the eighth - tallest building in the world.
Document 7: Ultima Tower: The Ultima Tower is a hypothetical supertall skyscraper, designed by American architect Eugene Tsui in 1991. It has been envisioned to be built in San Francisco, California and could accommodate up to 1 million people. With a total height of , the tower would be 2 miles tall, and comprise 500 stories if built. It is one of the tallest buildings/man-made structures ever conceived.
Document 8: Darren Korb: Korb attended Bellarmine College Preparatory high school in San Jose, California. There he would meet his longtime friend and collaborator Logan Cunningham. Having an engineering background, Korb went to New York University for music production and music business. Prior to his work with Supergiant Games, he worked on minor television and film projects. He was also a member of the NYC band Audio Fiction and was the co-founder, as well as a current member of NYC indie band, Control Group.
Document 9: 1201 Third Avenue: 1201 Third Avenue (formerly Washington Mutual Tower) is a , 55-story skyscraper in Downtown Seattle, in the U.S. state of Washington. It is the second-tallest building in the city, the eighth-tallest on the West Coast of the United States, and the 74th-tallest in the United States. Developed by Wright Runstad & Company, construction began in 1986 and finished in 1988. 1201 Third Avenue was designed by Kohn Pedersen Fox Associates and The McKinley Architects. The building was the world headquarters of the financial company Washington Mutual from the building's opening until 2006, when the company moved across the street to the WaMu Center (renamed the Russell Investments Center after the bank collapsed in 2008).
Document 10: Prudential Tower: The Prudential Tower, also known as the Prudential Building or, colloquially, The Pru, is an International Style skyscraper in Boston, Massachusetts. The building, a part of the Prudential Center complex, currently stands as the 2nd - tallest building in Boston, behind 200 Clarendon Street, formerly the John Hancock Tower. The Prudential Tower was designed by Charles Luckman and Associates for Prudential Insurance. Completed in 1964, the building is 749 feet (228 m) tall, with 52 floors, and (as of February 2018) is tied with others as the 96th - tallest in the United States. It contains 1,200,000 sq ft (110,000 m) of commercial and retail space. Including its radio mast, the tower stands as the tallest building in Boston, rising to 907 feet (276 m) in height.
Document 11: SoundGirl: Beardshaw and Shortland were friends and school classmates in London that sang together before another girl from their neighbourhood, Redmond, joined them to form SoundGirl. A management company, Angelic Union, held auditions for a girl band project in a dance studio. The three girls went, wrote a song in ten minutes, and sang it for Angelic Union, who reportedly signed them on the spot.
Document 12: Salesforce Tower: Salesforce Tower, formerly known as the Transbay Tower, is a 1,070 - foot (326 m) office skyscraper under construction in the South of Market district of downtown San Francisco. It is located at 415 Mission Street between First and Fremont Streets, next to the Transbay Transit Center site. Salesforce Tower is the centerpiece of the San Francisco Transbay redevelopment plan. The plan contains a mix of office, transportation, retail, and residential uses. When completed, the tower will be the tallest in San Francisco. With a top roof height of 970 feet (296 m) and an overall height of 1,070 feet (326 m), it will be the second - tallest building west of the Mississippi River after the Wilshire Grand Center in Los Angeles.
Document 13: Houston: Centered on Post Oak Boulevard and Westheimer Road, the Uptown District boomed during the 1970s and early 1980s when a collection of mid-rise office buildings, hotels, and retail developments appeared along Interstate 610 west. Uptown became one of the most prominent instances of an edge city. The tallest building in Uptown is the 64-floor, 901-foot (275 m)-tall, Philip Johnson and John Burgee designed landmark Williams Tower (known as the Transco Tower until 1999). At the time of construction, it was believed to be the world's tallest skyscraper outside of a central business district. The new 20-story Skanska building and BBVA Compass Plaza are the newest office buildings built in Uptown after 30 years. The Uptown District is also home to buildings designed by noted architects I. M. Pei, César Pelli, and Philip Johnson. In the late 1990s and early 2000s decade, there was a mini-boom of mid-rise and high-rise residential tower construction, with several over 30 stories tall. Since 2000 more than 30 high-rise buildings have gone up in Houston; all told, 72 high-rises tower over the city, which adds up to about 8,300 units. In 2002, Uptown had more than 23 million square feet (2,100,000 m²) of office space with 16 million square feet (1,500,000 m²) of Class A office space.
Document 14: Mountain Sounds: Mountain Sounds is a joint recording project composed of Tim Hoyt and Franc Castillejos, citizens of the United States and Guatemala respectively. The pair originally met and began playing together in Florida where Castillejos had moved for school, but reconnected several years later after he returned to Guatemala and Hoyt moved to Portland, Oregon. Their debut album was self-produced in an unused orphanage originally built by Castillejos' parents in the Cerro Alux Mountains outside of Guatemala City. It was mixed by Matt Wilbur of The Vanguard Room and mastered by Troy Glessner. The first track from the album, "Lion or the Bee", was premiered by Rolling Stone as a Daily Download, and the full album was made available by Beats Per Minute as a free stream in advance of its official release date of March 26, 2013.
Document 15: El Café Chorale: The Choir has defined and archived a proud career based in its versatility and excellence in Choral performances delighting audiences in Costa Rica, Europe and The United States. Composed of selected professionals and students from several Universities and Academies in the Central Valley of Costa Rica, El Café Chorale is dedicated to the development, study and diffusion of the vocal repertoire, performing music from the Renaissance to Contemporary style and Latin American Folk Choral Arrangements.
ground_truth: Transamerica Pyramid
sub_queries: Voice Farm >> location of formation Answer: San Francisco
what is the pyramid building in San Francisco Answer: Transamerica Pyramid