Question: What ranking in AVN tip list of porn stars is the owner of Evolution Erotica?
Context: Chasey Lain (born December 7, 1971) is an American pornographic actress.  She became a stripper as a young adult, and later pursued a career in California in the adult film industry.  Lain was on "AVN" magazine's list of top 50 porn stars of all time in 2002 and inducted into the AVN Hall of Fame in 2003. Evolution Erotica is a pornographic film production company, with a catalog of DVD titles and internet content.  It is owned by Tom Byron, who also owns Tom Byron Pictures.  Both studio's films are distributed by Byron's Evolution Distribution.  Ricky D formerly worked as an editor for Evolution, and his brother Ivan E. Rection joined the company as a cameraman.  By March 2007 it had produced 126 films. Dick Ho: Asian Male Porn Star is the title of a 2006 documentary film directed by Jeffrey Lei, that explores the supposed existence of an adult film actor named "Dick Ho" during the 1970s, which is considered to be the golden age of the adult film industry.  The lore of the film emphasizes the fact that he’s Asian, commenting on the lack or absence of Asian male heterosexuality in mainstream American porn.  Revelations of his life, and the controversy surrounding it, are presented through rare film footage and interviews with actual porn stars of the era. The Sexorcist is the fourth studio album by American rapper Necro, released on August 2, 2005 by Psycho+Logical-Records.  Necro has been known for his gory lyrics, however this album marked a focus particularly on sex and porn.  It is also the second album to feature live instrumentation by Necro himself.  Necro's reach into the porn industry is evident on this album as porn stars like Ron Jeremy, Joey Silvera, Alex Sanders and Peter North perform on him during the intermissions.  Despite the album's suggestive themes which include gore, degradation, sex, bondage, and diaper play, Necro chose not to place a parental advisory sticker on the cover. Extreme Associates, formerly known as Extreme and Extreme 2.0, is a pornographic film producer, featuring a catalog of DVD titles and Internet content.  It is owned by Rob Zicari ("Rob Black") and his wife Janet Romano ("Lizzy Borden").  The studio's material is controversial, with its films often featuring erotic humiliation and rough sex.  Extreme has faced legal charges of obscenity in the U.S.  It is associated with another adult film company, Evolution Erotica. Tom Byron (born Thomas Bryan Taliaferro, Jr.  April 4, 1961) is a former American pornographic actor, director and producer.  He is of Italian descent and is an alumnus of the University of Houston.  A member of the XRCO and the AVN Halls of Fame, Byron was also voted #20 in AVN's top 50 pornstars of all time.  Byron is also co-founder and co-owner of the Xtreme Pro Wrestling (XPW) independent professional wrestling promotion. Ginger Lynn Allen (born December 14, 1962) is an American pornographic actress and model who was arguably the premier adult-entertainment star of the 1980s.  She also had minor roles in various B-movies. AVN has ranked her at #7 in a list of the 50 greatest porn stars of all time.  After ending her pornography career, she began using her full name, Ginger Lynn Allen, and found work in a variety of B-movies.  She had a late career return to the adult industry and made a brief series of movies.  Allen is a member of AVN, NightMoves Adult Entertainment, and XRCO Halls of Fame. Pornography (often abbreviated porn) is the portrayal of sexual subject matter for the purpose of sexual arousal.  Pornography may be presented in a variety of media, including books, magazines, postcards, photographs, sculpture, drawing, painting, animation, sound recording, writing, film, video, and video games.  The term applies to the depiction of the act rather than the act itself, and so does not include live exhibitions like sex shows and striptease.  The primary subjects of present-day pornographic depictions are pornographic models, who pose for still photographs, and pornographic actors or porn stars, who perform in pornographic films.  If dramatic skills are not involved, a performer in a porn film may also be called a model. Marilyn Chambers (April 22, 1952 – April 12, 2009) was an American pornographic film actress, exotic dancer, model, actress, and vice-presidential candidate.  She was known for her 1972 hardcore film debut "Behind the Green Door" and her 1980 pornographic film "Insatiable".  She ranked at No. 6 on the list of Top 50 Porn Stars of All Time by AVN, and ranked as one of Playboy's Top 100 Sex Stars of the Century in 1999.  Although she was primarily known for her adult film work, she made a successful transition to mainstream projects and has been called "porn's most famous crossover". Shannon Michelle Wilsey (October 9, 1970 – July 11, 1994), better known by her stage name Savannah, was an American pornographic film actress who starred in over 100 videos during her career.  One of the most prominent Adult industry models of her time, she achieved notoriety within her short (1990–1994) career due to her onscreen presence and personal life.  In January 2002, "AVN" ranked her at #19 on their list of the top 50 porn stars of all time.
Answer: #20