Question: Fan Expo Dallas is a three-day convention produced by a multinational events and publishing company with offices in how many countires?
Context: Toronto, Canada's Festival of Fear is an annual multigenre fan convention that runs as part of Fan Expo Canada.  It was founded as the Canadian National Horror Expo in 2004 by "Rue Morgue Magazine" and Hobby Star Marketing Inc.  It is traditionally a three-day event (Friday through Sunday) typically held the weekend before Labour Day during the summer in Toronto, Canada, at the Metro Toronto Convention Centre.  Since 2011 it has become a four-day-long event. Informa plc is a multinational events and publishing company with its head office and registered office in London.  It has offices in 43 countries and around 6,500 employees.  It owns numerous brands including CRC Press, Datamonitor, Institute for International Research, "Lloyd's List" (London Press Lloyd), Penton, Routledge, and Taylor & Francis. UFC 136: Edgar vs. Maynard III was a mixed martial arts event held by the Ultimate Fighting Championship on October 8, 2011, at the Toyota Center in Houston, Texas.  The event coincided with a two-day UFC Fan Expo held at the George R. Brown Convention Center. The National Spiritualist Association of Churches (NSAC) is one of the oldest and largest of the national Spiritualist church organizations in the United States.  The NSAC was formed as the National Spiritualist Association of the United States of America (NSA) in September 1893, during a three-day convention in Chicago, Illinois.  Although American Spiritualists had previously tended to resist institutional or denominational organization, early NSA leaders hoped organization would help promote the truths of the religion both spiritually and practically.  Organization could help non-Spiritualists distinguish genuine mediumship from the rapidly proliferating varieties of fraudulent mediumship, increase communication among Spiritualists, prevent the legal prosecution of spirit mediums under fortune telling and medical licensing laws, and counterattacks by "orthodox" ministers in the press.  To these reasons, early leaders added the material support of spirit mediums and healers, just as other religious groups provided for the support of their clergy. Boston Comic Con was a comic book convention held annually in Boston, MA, for ten years.  Primarily focused on comic books, the convention later featured media guests from film and television, cosplayers, an art auction, a tabletop/CCG/RPG gaming room, and an annual costume contest.  After being bought by Informa as part of their Fan Expo line, the 2017 edition retired the Comic Con name and the show was renamed Fan Expo Boston. Solve for X is a think tank project launched by Google to incite collaboration to solve global issues, "X" representing a remedy.  The project kicked off on February 1, 2012 at a three-day convention at CordeValle Resort in San Martin, California.  Solve for X talks were presented to 50 people, hosted by Google executives Eric Schmidt, Astro Teller, and Megan Smith.  The conventions are expected to occur "a few times a year".  The website inaugurated on February 6, 2012. Toronto, Ontario, Canada's CNAnime was an annual multigenre fan convention that ran within what is now called Fan Expo Canada.  It was founded as the Canadian National Anime Expo in 1998 by Hobby Star Marketing Inc.  It was traditionally a three-day event (Friday through Sunday) typically held the weekend before Labour Day during the summer in Toronto, Ontario, Canada, at the Metro Toronto Convention Centre. The Ontario Coptic Youth Convention (OCYC) is an annual meeting of many Coptic Christian high school and university students in Ontario and some parts of the United States.  It usually takes place during the first weekend of August, maximizing the number of student participants.  In this two-night and three-day convention, a wide range of activities take place.  Youth from each participating city have their own soccer, basketball, and volleyball teams, and have friendly competitions with the youth from the other parishes.  The teams are named after either the city in which the church is located, or the saint(s) whom the church is named after.  Other activities in OCYC include drama competitions, spiritual workshops and seminars, lectures by priests and bishops, prayer meetings, and social gatherings. Fan Expo Dallas is a three-day comic book, speculative fiction, gaming fan convention now held annually in the Dallas, Texas, area.  Larger in scale than the Dallas Fan Days events under the same management, Fan Expo Dallas focuses on comic book artists, writers, and publishers.  These events usually also feature question and answer sessions, a large dealers room, and a number of comics and media guests signing autographs.  The event, previously known as Dallas Comic Con (or DCC for short), is produced by Informa. Fan Expo Canada is an annual speculative fiction fan convention held in Toronto, Ontario.  It was founded as the Canadian National Comic Book Expo in 1995 by Hobby Star Marketing Inc.  It includes distinctly branded sections, including GX (Gaming Expo) and SFX (Science Fiction Expo), and formerly CNAnime (Canadian National Anime Expo).  It is a four-day event (Thursday through Sunday) typically held the weekend before Labour Day during the summer at the Metro Toronto Convention Centre (MTCC) and is now owned by Informa.
Answer: 43