Question: Who was elected mayor in 2018, of the place where Portrait in Black was filmed?

full_context: Document 1: Portrait in Black: "Portrait in Black" was filmed in and around San Francisco, including a sequence at Devil's Slide on the Pacific Coast Highway (State Route 1).
Document 2: Black Dynamite: Cinematographer Shawn Maurer shot "Black Dynamite" on Super 16 Color Reversal Kodak film stock to get the high contrast and saturated look common in many low-budget Blaxploitation films of the 1970s. The film was then converted to digital for editing. The filmmakers supplemented their shoot with period stock footage from Sony Pictures Stock Footage, using films such as "Missing in Action", "Charlie's Angels", and "Police Woman". "Black Dynamite" was shot in the Leimert Park and Angeles Vista sections of Los Angeles over twenty days, with several green-screen days and one reshoot day. The film had such a low budget that they had to "think in the same ways that they had to think" in the classic blaxploitation movies. Sanders and White had a difficult time keeping the modern world out of the movie. Sanders was worried about anything modern that could destroy "the whole illusion." White worked individually with actors to keep their tone correct.
Document 3: The Devil's Own: "The Devil's Own" was filmed on location and at the Chelsea Piers studios in New York City, as well as in Newark, Hoboken, Jersey City, Bayonne, Sandy Hook and Montclair, New Jersey. and Greenport, New York on Long Island. The opening scenes were filmed at Port Oriel, Clogherhead, County Louth, Republic of Ireland. The Belfast shootout scenes were filmed in Inchicore, Dublin in July 1996. Other location shoots in Ireland were in the Dublin Mountains. Two months before it opened, the film was still unfinished: Pakula was unhappy with the final scene ("a showdown on a boat with a cargo of Stinger missiles"), so in early February the scene was "rewritten and reshot over two days in a studio in California."
Document 4: More American Graffiti: Wolfman Jack briefly reprised his role, but in voice only. The drag racing scenes were filmed at the Fremont Raceway, later Baylands Raceway Park (now the site of automobile dealerships), in Fremont, California.
Document 5: Seattle: Like most parts of the United States, government and laws are also run by a series of ballot initiatives (allowing citizens to pass or reject laws), referenda (allowing citizens to approve or reject legislation already passed), and propositions (allowing specific government agencies to propose new laws/tax increases directly to the people). Federally, Seattle is part of Washington's 7th congressional district, represented by Democrat Jim McDermott, elected in 1988 and one of Congress's liberal members. Ed Murray is currently serving as mayor.
Document 6: Seattle: Seattle's political culture is very liberal and progressive for the United States, with over 80% of the population voting for the Democratic Party. All precincts in Seattle voted for Democratic Party candidate Barack Obama in the 2012 presidential election. In partisan elections for the Washington State Legislature and United States Congress, nearly all elections are won by Democrats. Seattle is considered the first major American city to elect a female mayor, Bertha Knight Landes. It has also elected an openly gay mayor, Ed Murray, and a socialist councillor, Kshama Sawant. For the first time in United States history, an openly gay black woman was elected to public office when Sherry Harris was elected as a Seattle city councillor in 1991. The majority of the current city council is female, while white men comprise a minority.
Document 7: Alamo Square, San Francisco: A row of Victorian houses facing the park on Steiner Street, known as the ``Painted Ladies '', are often shown in the foreground of panoramic pictures of the city's downtown area. A number of movies, television shows and commercials have been filmed in or around Alamo Square. The park features heavily in the 1978 horror film The Invasion of the Body Snatchers, and the romantic comedy The Five - Year Engagement. The opening sequence of the American sitcom Full House (1987 - 1995) features a romp in Alamo Square Park with the famous row of Victorians in the background.
Document 8: San Francisco: San Francisco is located on the West Coast of the United States at the north end of the San Francisco Peninsula and includes significant stretches of the Pacific Ocean and San Francisco Bay within its boundaries. Several picturesque islands—Alcatraz, Treasure Island and the adjacent Yerba Buena Island, and small portions of Alameda Island, Red Rock Island, and Angel Island—are part of the city. Also included are the uninhabited Farallon Islands, offshore in the Pacific Ocean. The mainland within the city limits roughly forms a "seven-by-seven-mile square", a common local colloquialism referring to the city's shape, though its total area, including water, is nearly .
Document 9: Time After Time (1979 film): Time After Time was filmed throughout San Francisco, including Cow Hollow, North Beach, the Hyatt Regency hotel, California Academy of Sciences in Golden Gate Park, the Marina District, Ghirardelli Square, Fisherman's Wharf, the Richmond District, the Golden Gate Bridge, Grace Cathedral on Nob Hill, the Embarcadero Center, Chinatown, the Marina Green, the Palace of Fine Arts, Potrero Hill, and the Civic Center.
Document 10: 2017 Minneapolis mayoral election: No candidate achieved a majority in the first round of ballot counting on election night. Jacob Frey was declared the winner the next day after several rounds of vote tabulations.
Document 11: 2018 Kansas gubernatorial election: On August 7, 2018, Kobach appeared headed for victory over incumbent Governor Jeff Colyer in the Republican gubernatorial primary by an initial margin of 191 votes. By August 9, 2018, his lead stood at 121 votes, but discrepancies in some counties needed resolution, and provisional and absentee ballots may not have been counted in some counties. Democratic Senator Laura Kelly easily won the Democratic nomination. Independent Greg Orman, who finished second in the 2014 U.S. Senate race against incumbent Republican Pat Roberts, is running for governor, again as an independent candidate.
Document 12: Christina Olague: Olague was appointed to the post by mayor Ed Lee in the wake of her predecessor Ross Mirkarimi's election to be sheriff of San Francisco. However, she was defeated by challenger London Breed in the San Francisco Board of Supervisors elections, 2012. She was the first openly bisexual person to serve as a San Francisco Supervisor.
Document 13: The Graduate: Many of the exterior university campus shots of Berkeley were actually filmed on the brick campus of USC in Los Angeles. Other scenes were filmed on Durant Avenue and College Ave. across from the Unit One Dorms in the city of Berkeley, as well as on the Berkeley campus itself (shot remotely from Telegraph Avenue, as the university did not permit commercial filming at the time).
Document 14: 2018 San Francisco mayoral special election: Eight candidates qualified to appear on the ballot, and a ninth qualified as a write - in. The four major candidates were former Supervisor Angela Alioto, former Acting Mayor London Breed, Supervisor Jane Kim and former State Senator Mark Leno. All four main candidates identify as Democrats, though the position is officially nonpartisan per the Constitution of California. Leno conceded the race to Breed on June 13.
Document 15: San Diego: The members of the city council are each elected from single member districts within the city. The mayor and city attorney are elected directly by the voters of the entire city. The mayor, city attorney, and council members are elected to four-year terms, with a two-term limit. Elections are held on a non-partisan basis per California state law; nevertheless, most officeholders do identify themselves as either Democrats or Republicans. In 2007, registered Democrats outnumbered Republicans by about 7 to 6 in the city, and Democrats currently (as of 2015[update]) hold a 5-4 majority in the city council. The current mayor, Kevin Faulconer, is a Republican.
ground_truth: former Acting Mayor London Breed
sub_queries: Which place is Portrait in Black in? Answer: San Francisco
who was elected mayor of San Francisco in 2018 Answer: former Acting Mayor London Breed