Question: Where is the headquarters of the magazine of which Stephanie Stahl is the Editor-in-Chief?

Context paragraphs:
American Iron Magazine: American Iron Magazine is a Stamford, Connecticut based American motorcycle magazine specializing in the coverage of American-made motorcycles including Harley-Davidson, Indian and Big Dog Motorcycles.  American Iron Magazine (or AIM) contains columns by Editor-in-Chief Buzz Kanter, Editor Chris Maida, and female motorcyclists Genevieve Schmitt and Stephanie Feld, as well as standard tech articles by featured writers Donny Peterson and Tom Johnson.  Typical articles include how-to stories on motorcycle repairs and maintenance, classic bikes, custom builds, motorcycle reviews, motorcycle product/accessory reviews, events, the Hog Helpline for tech questions, and recommendations on routes for motorcycle enthusiasts.

Focus (German magazine): Focus (companys's preferred spelling in capital letters) is a German-language news magazine published by Hubert Burda Media.  Established in 1993 as an alternative to the Spiegel weekly news magazine, since 2015 the editorial staff has been headquartered in Germany's capital of Berlin.  Alongside Spiegel and Stern, Focus is one of the three most widely circulated German weeklies.  The concept originated from Hubert Burda and Helmut Markwort, who went from being Editor-in-chief to become publisher in 2009 and since 2017 has been listed in the publication's masthead as Founding Editor-in-chief.  The current Editor-in-chief of Focus as of March 2016 is Robert Schneider.

The Nudes: The Nudes were an American folk rock duo consisting of Walter Parks and Stephanie Winters, formed in 1991.  The Nudes released three albums: "The Nudes" (1993), "Velvet Sofa" (1996), and "Boomerang" (1998), and licensed recordings to an HBO series.  Billboard magazine described the duo's first CD as unlike "anything else on the airwaves."  Touring the US and Canada playing the acoustic and college circuit, The Nudes frequently opened for legendary performers including Daniel Lanois, George Benson, Shawn Colvin, and on several occasions, Richie Havens.  By 1999 Walter and Stephanie disbanded as The Nudes and pursued their solo careers although on occasion they would reconvene to play gigs under the name "Winters & Parks".  In 2004 Walter was playing as lead guitarist with Richie Havens and Stephanie was asked to record for Richie’s "Grace of the Sun" CD and his 2008 release "Nobody Left to Crown".

Gerry Stahl: Gerry Stahl (born March 16, 1945) is emeritus professor of computing and informatics at Drexel University in Philadelphia, PA, USA.  He is a researcher in the field of computer-supported collaborative learning (CSCL) and the Learning Sciences.  He has taught, designed, analyzed and theorized about learning with technology in small groups.  He is the founding editor-in-chief of the "International Journal of Computer-Supported Collaborative Learning".  He directed the Virtual Math Teams (VMT) research project at the Math Forum from 2003-2014 and published four books and many articles analyzing project data.  From these findings, he developed the postcognitivist theory of group cognition.

Dwell (magazine): Dwell is a design and technology brand.  It was launched with a magazine in September 2000 to bridge the gap between design professionals and enthusiasts by Lara Hedberg Deam with architecture and design critic Karrie Jacobs as its Editor-in-Chief.  In August 2002 Jacobs left the magazine and was replaced by Senior Editor Allison Arieff.  Following Arieff, Sam Grawe held the position from 2006 - 2011.  Current Editor-in-Chief and EVP Content Amanda Dameron joined Dwell in 2008.  Her work has been published in numerous domestic and international titles, from Condé Nast Traveler, Los Angeles Magazine, Urbis, Vogue Living and Elle Décor UK.  As Editor-in-Chief of Dwell Media and EVP Content, she directs content across all the company's platforms, extending from print and digital to live events, e-commerce, research, and other ancillary products.

InformationWeek: InformationWeek is a digital magazine which conducts corresponding face-to-face events, virtual events, and research.  It is headquartered in San Francisco, California and was first published in 1985 by CMP Media, later called CMP Technology.

Consciousness and Cognition: The journal Consciousness and Cognition (ISSN 1053-8100) provides a forum for scientific approaches to the issues of consciousness, voluntary control, and self.  The journal was launched by Bernard Baars and William Banks.  It features empirical research (in the form of regular articles and short reports) and theoretical articles.  Integrative theoretical and critical literature reviews, and tutorial reviews are also published.  Also, Special Issues on selected topics in scientific studies of consciousness are published.  The journal aims to be both scientifically rigorous and open to novel contributions.  The journal's editor-in-chief positions were held by Bernard Baars, late William Banks and late Bruce Bridgeman.  Currently the Editorial team includes Gregory Francis, Stephanie Goodhew, Michael Graziano, J. Timothy Lane, Antti Revonsuo, Devin Terhune, and Talis Bachmann (editor-in-chief).  .

Stephanie Stahl: Stephanie Stahl is the Editor-in-Chief of InformationWeek magazine.  Stahl is a celebrated journalist, speaker and luminary in the business technology market.  Under her leadership, InformationWeek has won numerous editorial excellence awards from ASBPE, Print Magazine, Ozzie, B-to-B Magazine and Adweek's Technology Marketing.  Well respected by the reader, PR and vendor community, Stahl is a frequent speaker at key industry events nationwide.

San Jose Mercury News West Magazine: San Jose Mercury News West Magazine, also referred to as West and West Magazine, was a Sunday magazine published by "San Jose Mercury News".  Jeffrey Klein served as the magazine's editor-in-chief in 1993, and left that year to become editor-in-chief of "Mother Jones".  He was replaced by "Mercury News" columnist Pat Dillon.  Dillon left in 1994 to pursue work on a book, and "West" former medical reporter and magazine writer Fran Smith took over as the next editor-in-chief.  Bob Ingle was the newspaper's executive editor in 1994.  "West Magazine" has received numerous awards and has been recognized both for its articles and investigative journalism, as well as its art design.

Stephanie Stahl (reporter): Stephanie Stahl is the medical reporter for KYW-TV.  She has worked for CBS 3 (KYW) since 1992.  The Pennsylvania Public Health Association honored her with its 2000 Media Award.Before working for KYW, she was an anchor and reporter for WCAU-TV.

Supporting paragraphs: Stephanie Stahl InformationWeek
Answer: San Francisco, California