Question: Who created and wrote the fictional entity Phoenix Force for the The Dark Phoenix Saga comic book?

full_context: Document 1: Beyonder: The Beyonder is a fictional cosmic entity appearing in American comic books published by Marvel Comics. Created by writer Jim Shooter and artist Mike Zeck, the Beyonder first appeared in "Secret Wars" #1 (May 1984) as an unseen, nearly omnipotent being who kidnapped the heroes and villains of the Marvel Universe and had them do battle on another planet called Battleworld. He later appeared in a more antagonistic role in the 1985 sequel "Secret Wars II", in which he took human form, and threatened to destroy the Marvel multiverse. Although he first took on a physical, humanoid form in "Secret Wars II" #2, it was in "Secret Wars II" #3 that he took on the permanent form in which he remained for the rest of his existence, that of a Caucasian human male with curly black hair. Although the character met his demise at the end of "Secret Wars II", he has subsequently appeared in stories well into the 2000s, although in greatly diminished form.
Document 2: Fantastic Four vs. the X-Men: Fantastic Four vs. the X-Men (also known as X-Men vs Fantastic Four) is a four-issue comic book limited series published by Marvel Comics in 1987. Written by longtime "Uncanny X-Men" writer Chris Claremont, pencilled by Jon Bogdanove, and inked by Terry Austin, the series revolves around the quest to find an effective medical treatment for Kitty Pryde. Along the way, the Fantastic Four and the X-Men come into conflict with each other, and what appears to be a sinister secret regarding the Fantastic Four's origin comes to light.
Document 3: Uncanny X-Force: Uncanny X-Force was a comic book ongoing series published by Marvel Comics. Created by writer Rick Remender and artist Jerome Opeña, the first volume of the series continued the story of Wolverine and his X-Force team from the series "X-Force," vol. 3. The title was relaunched after issue #35 as part of the Marvel NOW! relaunch event, and the new volume features Psylocke and Storm leading a new team of "outcasts and scoundrels". The second volume was one of two X-Force ongoing titles, along with "Cable and X-Force".
Document 4: X-Men: The Last Stand: X-Men: The Last Stand is a 2006 superhero film, based on the X-Men superhero team introduced in Marvel Comics. The film, distributed by 20th Century Fox, is the sequel to 2003's "X2" and the third installment in the "X-Men" film series. It was directed by Brett Ratner, written by Simon Kinberg and Zak Penn, and features an ensemble cast, including Hugh Jackman, Halle Berry, Ian McKellen, Famke Janssen, Anna Paquin, Kelsey Grammer, James Marsden, Rebecca Romijn, Shawn Ashmore, Aaron Stanford, Vinnie Jones, and Patrick Stewart. The film's script is loosely based on two "X-Men" comic book story arcs: "The Dark Phoenix Saga" by writer Chris Claremont and artist John Byrne, and "Gifted" by writer Joss Whedon and artist John Cassaday, with a plot that revolves around a "mutant cure" that causes serious repercussions among mutants and humans, and on the resurrection of Jean Grey.
Document 5: Freedom Force (comics): Freedom Force is the name of two fictional teams appearing in American comic books published by Marvel Comics.
Document 6: The Dark Phoenix Saga: "The Dark Phoenix Saga" is an extended X-Men storyline in the fictional Marvel Comics Universe , focusing on Jean Grey and the Phoenix Force. It was written by Chris Claremont with art by Dave Cockrum and John Byrne.
Document 7: Fantomex: Fantomex is a fictional superhero appearing in American comic books published by Marvel Comics. The character is commonly associated with the X-Men titles. Fantomex first appeared in "" #128 (August, 2002) and was created by Grant Morrison and Igor Kordey. Initially introduced as a character similar to Fantômas and Diabolik, he is later revealed to be an escaped experiment from the Weapon Plus Program.
Document 8: X-Men: Dark Phoenix: X-Men: Dark Phoenix is an upcoming American superhero film based on Marvel Comics' X-Men characters, distributed by 20th Century Fox. It is intended to be the thirteenth installment in the "X-Men" film series, and the beginning of a new "X-Men" trilogy. The film is being written and directed by Simon Kinberg, and is set to star James McAvoy, Michael Fassbender, Jennifer Lawrence, Nicholas Hoult, Tye Sheridan, Sophie Turner, Alexandra Shipp, Kodi Smit-McPhee, Evan Peters, and Jessica Chastain. In "X-Men: Dark Phoenix", the X-Men must face the full power of the Dark Phoenix as well as the alien Shi'ar empire.
Document 9: Mystique (comics): Mystique (Raven Darkhölme) is a fictional character appearing in American comic books published by Marvel Comics, commonly in association with the X-Men. Created by artist David Cockrum and writer Chris Claremont, she first appeared in the comic book "Ms. Marvel" #16, published in 1978.
Document 10: Eternity (comics): Eternity is a fictional cosmic entity appearing in American comic books published by Marvel Comics. He is the "de facto" leader of the abstract entities collectively known as the Cosmic Powers of the Marvel Universe.
Document 11: Avengers vs. X-Men: Avengers vs. X-Men (abbreviated AvX and AvsX) is a 2012 crossover event that was featured in comic books published by Marvel Comics. The event, consisting of an eponymous limited series and numerous tie-in books, involves the return of the Phoenix Force and the subsequent war between the Avengers and the X-Men. The 12-issue twice-monthly series was first published in April 2012, and features a storyline by Jason Aaron, Brian Michael Bendis, Ed Brubaker, Jonathan Hickman and Matt Fraction, with a rotating team of artists including John Romita, Jr., Olivier Coipel and Adam Kubert.
Document 12: Jean Grey: Jean Grey-Summers (born Jean Elaine Grey) is a fictional superhero appearing in American comic books published by Marvel Comics. The character has been known under the aliases Marvel Girl, Phoenix, and Dark Phoenix. Created by writer Stan Lee and artist Jack Kirby, the character first appeared in "The X-Men" #1 (September 1963).
Document 13: List of cosmic entities in Marvel Comics: This is a list of prominent cosmic or mystic beings appearing in the fictional Marvel Universe, as defined by status and/or god-like power level. Licensed or creator-owned characters (G.I. Joe, Groo the Wanderer, RoboCop, Star Trek, Star Wars, etc.) should not be included. Neither do temporary power-ups through outside sources (e.g. the Red Skull possessing a cosmic cube, etc.). Marvel Universe characters who exist in other dimensions, timelines, or times (such as Dormammu, or Kang the Conqueror) "are" included. Company owned characters below are also included with reference. Marvel has periodically published guides to their characters under the title Official Handbook of the Marvel Universe, a Marvel Comics Presents series and a series of Marvel Universe Cards. "Epic Comics, Marvel UK, Marvel Knights, Marvel 2099, Razorline," and "Ultraverse" are a trademark of Marvel Publications.
Document 14: Photon (Image Comics): Photon is a member of a fictional alien race appearing in the Youngblood series of comics. He is a silver-and-blue-colored humanoid alien with a green flame coming from the top of his head a trait shared by all members of his race. His race comes from a planet called Acura and are known as Acurans.
Document 15: Phoenix Force (comics): The Phoenix Force is a fictional entity appearing in American comic books published by Marvel Comics. The entity has bonded with other characters, and often used the alias Phoenix while bonded.
ground_truth: Chris Claremont