Question: An untitled Han Solo film is in production by which film and television company based in San Francisco?

Context paragraphs:
Phil Lord and Christopher Miller: Philip A. "Phil" Lord (born July 12, 1975) and Christopher Robert "Chris" Miller (born September 23, 1975) are American filmmakers, actors, and animators.  Lord and Miller met at Dartmouth College.  They are known for directing and writing the animated films "Cloudy with a Chance of Meatballs" (2009) and "The Lego Movie" (2014), as well as directing the live-action comedy film "21 Jump Street" (2012) and its sequel (2014).  They were originally slated to direct an untitled Han Solo film for Lucasfilm and Disney; however, on June 20, 2017, it was announced that they were leaving the project.

Han Solo: Han Solo is a character in the "Star Wars" franchise.  In the original film trilogy, Han and his co-pilot, Chewbacca, became involved in the Rebel Alliance's struggle against the Galactic Empire.  During the course of the "Star Wars" narrative, he becomes a chief figure in the Alliance and succeeding galactic governments.  "Star Wars" creator George Lucas described the character as "a loner who realizes the importance of being part of a group and helping for the common good".  Harrison Ford portrayed the character in the original "Star Wars" trilogy as well as "".  Alden Ehrenreich will portray a young Han Solo in an upcoming, as yet untitled spinoff film.

San Francisco Ballet: San Francisco Ballet is a ballet company, founded in 1933 as the San Francisco Opera Ballet under the leadership of ballet master Adolph Bolm.  The company is currently based in the War Memorial Opera House, San Francisco, under the direction of Helgi Tomasson.  San Francisco Ballet was the first professional ballet company in the United States.  It is among the world's leading dance companies, presenting more than 100 performances annually, with a repertoire that spans both classical and contemporary ballet.  Along with American Ballet Theatre and the New York City Ballet, San Francisco Ballet has been described as part of the "triumvirate of great classical companies defining the American style on the world stage today".

Alden Ehrenreich: Alden Caleb Ehrenreich ( ; born November 22, 1989) is an American actor.  He made his feature film debut in Francis Ford Coppola's independent film "Tetro" (2009) and appeared in Coppola's subsequent film "Twixt" (2011).  In 2013, he appeared in Woody Allen's "Blue Jasmine", Park Chan-wook's "Stoker" and starred in Richard LaGravenese's "Beautiful Creatures".  In 2016, he starred as Hobie Doyle in the Coen brothers comedy "Hail, Caesar! " and as Frank Forbes in Warren Beatty's "Rules Don't Apply".  In 2018, he will star as Han Solo in an as of yet untitled "Star Wars" spin-off film revolving around the character's younger years.

Colombo Baking Company: Colombo Baking Company was a bakery founded in 1896, known for its sourdough bread.  Located at 580 Julie Ann Way in Oakland, California, it became a wholly owned division of Hostess Brands.  Colombo sourdough rolls were manufactured at a satellite bakery in Sacramento, California.  Along with Toscana bakery of Oakland and Parisian bakery of San Francisco, Colombo became part of the San Francisco French Bread Company (SFFBC) which was acquired by Hostess in 1994.  The brands competed locally in the San Francisco Bay Area.  As a result of Hostess liquidating the company, Colombo shuttered its operation in November, 2012.  The SFFBC, through Colombo's bakery, was the maker of Emperor Norton San Francisco Sourdough Snacks, which ceased production in 2012, prior to the Hostess liquidation.

Christopher Statton: Christopher Statton is an American artist and arts administrator, community activist, and philanthropist, and activist based in the San Francisco Bay Area.  Statton is best known for his role in establishing San Francisco’s oldest continuously running theater, the Roxie Theater as a non-profit during his four-year tenure as Executive Director, 2010 – 2013.  In 2013 he was awarded the Marlon Riggs Award by the San Francisco Film Critics Circle for “his significant contribution to San Francisco’s film community through the Roxie Theater over the past four years.”  Ryan Coogler also received the award for his film "Fruitvale Station".  In 2013, San Francisco District 9 Supervisor David Campos awarded Statton with a Certificate of Honor for his “important and tireless work with the Roxie.”  Statton resigned from the Roxie in 2013 due to health concerns.

Untitled Han Solo film: An upcoming untitled American space Western film centered on Han Solo, a character from the "Star Wars" franchise, is in production and being produced by Lucasfilm from a screenplay by Lawrence and Jon Kasdan and will be distributed by Walt Disney Studios Motion Pictures.  The film will be the second "Star Wars Anthology" film, following the 2016 film "Rogue One".  It is a standalone installment, set prior to the events of the original 1977 film, following a young Han Solo.  The film stars Alden Ehrenreich as Solo, alongside Woody Harrelson, Emilia Clarke, Donald Glover, Thandie Newton, Phoebe Waller-Bridge and Joonas Suotamo.  The film takes place in the universe of "Star Wars" and explores the adventures of Han Solo and Chewbacca, including meeting Lando Calrissian.

Chewbacca: Chewbacca ( ), nicknamed "Chewie", is a fictional character in the "Star Wars" franchise.  He is a Wookiee, a tall, hirsute biped and intelligent species from the planet Kashyyyk.  Chewbacca is the loyal friend and first mate of Han Solo, and serves as co-pilot on Solo's spaceship, the "Millennium Falcon".  Within the films of the main saga, Chewbacca is portrayed by Peter Mayhew in the "Star Wars" on Episodes from "III" to "VIII" (Mayhew shares the role with his body double Joonas Suotamo on "" and "").  Suotamo took over the role alone in the upcoming, as yet untitled Han Solo movie.  The character has also appeared on television, books, comics, and video games.

Lucasfilm: Lucasfilm Ltd.  LLC is an American film and television production company based in the Letterman Digital Arts Center in San Francisco, California.  The studio is best known for creating and producing the "Star Wars" and "Indiana Jones" franchises, as well as its leadership in developing special effects, sound and computer animation for film.  Lucasfilm was founded by filmmaker George Lucas in 1971 in San Rafael, California; most of the company's operations were moved to San Francisco in 2005.  The Walt Disney Company acquired Lucasfilm in 2012 at a valuation of $4.06 billion.

Joan Mankin: Joan Mankin (May 16, 1948 – September 26, 2015] was an actor and clown prominent in the San Francisco Bay Area, from the early 1970s through 2014.  Mankin started her professional career in San Francisco in 1970 with a production of the San Francisco Mime Troupe's "An Independent Female".  Thereafter, she appeared in major roles in many Bay Area theater companies including the American Conservatory Theater, Aurora Theatre Company, Berkeley Rep, San Francisco Playhouse and California Shakespeare Theatre as well as the feminist Lilith Theater in the late 1970s early 1980's, of which she was Artistic Director for two years.  In 2006 she had a major singing role in the Los Angeles Ahmanson Theatre's production of "".

Supporting paragraphs: Untitled Han Solo film Lucasfilm
Answer: Lucasfilm