Question: In 2018, who was elected mayor of Merla Zellerbach's birthplace?

full_context: Document 1: 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 2: Evelyn Einstein: Einstein was born in Chicago; after her birth she was adopted by Hans Albert Einstein. Towards the end of her life, she recounted that as a child she was told she was an illegitimate daughter of Albert Einstein and a ballet dancer; however, she had no documentation supporting this claim. She obtained a Master's degree in Medieval literature at University of California, Berkeley. She was married to Grover Krantz for 13 years from 1964 to about 1977. She then worked briefly as an animal control officer, as a cult deprogrammer, and as a Berkeley, California, reserve police officer.
Document 3: 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 4: Susan Leal: Susan Leal is an American water utility consultant, the co-author of the book "Running out of Water". Formerly, she was the General Manager of SFPUC, San Francisco Treasurer and a San Francisco Supervisor. She lives in San Francisco, CA.
Document 5: George Melville Baker: George Melville Baker (1832–1890) was a playwright and publisher in Boston, Massachusetts, in the 19th century. He worked for Lee & Shepard publishers, then opened his own imprint. "George M. Baker & Co." issued works by authors such as Henry M. Baker, F.E. Chase, and Herbert Pelham Curtis. Baker's company ceased in 1885, succeeded by his brother's "Walter H. Baker & Co." George Baker also performed with comedian Henry C. Barnabee, appearing in "lyceum entertainments" in New England. He belonged to the Mercantile Library Association. He married Emily Bowles in 1858; children included novelist Emilie Loring, playwright Rachel Baker Gale, and screenwriter Robert Melville Baker.
Document 6: 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 7: 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.
Document 8: 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 9: Barbara Epstein: Epstein, née Zimmerman, was born in Boston, Massachusetts, to a Jewish family, and graduated from Radcliffe College in 1949. In 1953, she and editor Jason Epstein began a marriage that lasted 37 years.
Document 10: 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 11: Merla Zellerbach: Merla Zellerbach, née Myrle Carmel Burstein, was born in San Francisco in 1930, the daughter of Rabbi Elliot M. and Lottie Burstein. While attending Stanford University, she met and soon thereafter married Stephen Zellerbach. They had one child, son Gary. Her literary, civic and philanthropic work began at the time of her first marriage. By the time of her death on December 26, 2014, she authored 13 well reviewed novels and five self-help medical books, was a panelist for six years on the ABC TV show Oh My Word, and a columnist for the "San Francisco Chronicle". Subsequently, she was Editor of the "Nob Hill Gazette" for twelve years. Charities she supported and/or worked for included Compassion and Choices, the Coalition on Homelessness San Francisco, the Kidney Foundation, and a dozen more.
Document 12: 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 13: Loretta Schwartz-Nobel: For the next seven years, Schwartz-Nobel traveled the nation, doing similar research in several other cities, including Boston, Washington, and Chicago, and writing articles for local newspapers and magazines in each city. In 1981, she combined her experiences to form her first novel, "Starving in the Shadow of Plenty", in which she outlined the alarmingly destitute living conditions of America's poor families, focusing especially on the difficulty of obtaining food and the ineffectuality of government welfare programs. Her book, as well as a number of economic factors, contributed to a distinct period of awareness of domestic poverty in the United States. The U.S. Department of Agriculture, for example, concluded that "Hunger is increasing at a frenetic pace and the emergency of food available for distribution is quickly depleted."
Document 14: Renana Jhabvala: Renana Jhabvala was born in Delhi to the Booker Prize winning novelist and screen-writer, Ruth Prawer Jhabvala, and well-known architect Cyrus S. H. Jhabvala. Her grandparents were active in public life during the early to mid part of the twentieth century. Her grandfather, Shavaksha Jhabvala, was active in the early Indian trade union movement, and her grandmother, Mehraben Jhabvala, in the emerging women's movement. In a February 2012 talk given at the India International Centre (Delhi), Renana spoke about the work of Mehraben, who was a dedicated organiser and advocate of women and the President of the All-India Women's Conference from 1965–68.
Document 15: Caryl M. Stern: Caryl M. Stern (born October 30, 1957) is an American author, child advocate, civil and human rights activist, and non-profit executive.
ground_truth: former Acting Mayor London Breed
sub_queries: What is the place of birth of Merla Zellerbach? Answer: San Francisco
who was elected mayor of San Francisco in 2018 Answer: former Acting Mayor London Breed