Question: In 2018, who was elected mayor of the city where Greg Rucka was born?

full_context: Document 1: 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 2: 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 3: Verna Aardema: In her senior year at Michigan State, Norberg won three writing contests; although not her first, they were the most influential in her decision to pursue the childhood dream. She first considered writing for children when her daughter refused to eat until she'd heard one of her mother's stories. These bribes were often set in the places that she had been reading about recently, and as she became more and more interested in Africa, they began to be set there more frequently.
Document 4: Duncan Tucker: Tucker was born in Arizona and graduated from New York University. After the short subject film "The Mountain King", which was screened at over 31 international festivals, he wrote and directed his first feature film, "Transamerica". His book "Many Fish" is published by Ascent, and his photos and pictures are exhibited at many New York art galleries.
Document 5: Ken Kuhlken: Ken Kuhlken was born and grew up in San Diego, played semi-pro baseball in Tijuana, and attended San Diego State University, first as a philosophy and then as an English major. After college, he wrote, played guitar and sang in a rock and blues band, and taught high school, before relocating to attend the University of Iowa Writers’ Workshop.
Document 6: Star Wars: From the Adventures of Luke Skywalker: The book was written by Foster and based upon Lucas's original screenplay for the first Star Wars film. On how he got the job, Foster said, ``My agent got a call from Lucas's lawyer of the time, Tom Pollock (now one of the most powerful men in Hollywood). Someone had read a book of mine, Icerigger, knew that I had already done novelizations, and thought I might be the writer to do the novelization of Lucas' new film. I already knew his work through THX 1138 and American Graffiti. I accepted the offer to meet with George, and did so at Industrial Light and Magic, then in a small warehouse in Van Nuys, California (part of greater Los Angeles, and conveniently near my family home). We hit it off well, I got the assignment (for two books), and that's how it happened. ''
Document 7: 2017 San Antonio mayoral election: On May 6, 2017, the city of San Antonio, Texas held an election to choose the next mayor of San Antonio. As no candidate secured a majority of the vote (50% of all votes cast + 1), a runoff was held on June 10, 2017 with Councilman Ron Nirenberg defeating incumbent mayor Ivy Taylor.
Document 8: Greg Rucka: Greg Rucka was born in San Francisco and raised on the Monterey Peninsula of California, in an area known to the locals as "Steinbeck Country". He first discovered comics at the Nob Hill Market in Salinas, California, where at age five, he first saw digest-sized black and white reprints of Stan Lee and Jack Kirby's work on "The Incredible Hulk", which he convinced his mother to buy. He began writing at a young age, and at age 10, he won a county-wide short story contest. He graduated from Vassar College with an A.B. in English. He then enrolled in the University of Southern California's Master of Professional Writing program, graduating with a Master of Fine Arts. He names Douglas Adams as his biggest influence.
Document 9: 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 10: Joanna Russ: Joanna Russ was born in The Bronx, New York City, to Evarett I. and Bertha (née Zinner) Russ, both teachers. She began creating works of fiction at a very early age. Over the following years she filled countless notebooks with stories, poems, comics and illustrations, often hand-binding the material with thread.
Document 11: 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 12: Eleanor Davis: Eleanor Davis was raised in Tucson, Arizona by comic enthusiast parents who exposed her to stories and styles such as "Little Lulu", "Krazy Kat", "Little Nemo" and the "Kinder Kids". She attended Kino School, an alternative school in Tucson, from elementary school until she graduated from high school. It wasn't until high school, when she was introduced to the zine/minicomics world of alternative comics by classmates, that she started to draw comics seriously. In high school she began to self-publish her own comic and soon after decided to attend the Savannah College of Art and Design in Georgia to study sequential art. Davis's work began to get noticed for her original handmade die-cuts and coloring but was further helped by her diligent production of minicomics, attending comic conventions, and online presence.
Document 13: 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 14: 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 15: 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.
ground_truth: former Acting Mayor London Breed
sub_queries: In what city was Greg Rucka born? Answer: San Francisco
who was elected mayor of San Francisco in 2018 Answer: former Acting Mayor London Breed