Question: What movie does Charlotte Cardoza have a role in that follows a young wizard who experiences danger and opposition as he attempts to defeat a dragon?

Context paragraphs:
List of Merlin episodes: "Merlin" is a British fantasy-adventure television programme created by Julian Jones, Jake Michie, Julian Murphy, and Johnny Capps, starring Colin Morgan in the title role.  It was broadcast on BBC One from 20 September 2008 to 24 December 2012.  The show is loosely based on the Arthurian legends of the young wizard Merlin and his relationship with King Arthur, but it differs from traditional versions.  The show was influenced by the US drama series "Smallville" about the early years of Superman, and was produced by independent production company Shine Limited.

Grey Star the Wizard: Grey Star the Wizard is the first book in the World of Lone Wolf book series created by Joe Dever and written by Ian Page.  It is one of four books in the mini-series and features Grey Star, for whom the first book is named, a young Wizard trained by the enigmatic Shianti to stop the Wytch-King and his Shadakine Empire.  All four of the Grey Star books were released by Project Aon along with many of the other installments of the Lone Wolf series.

Bigfoot (1970 film): Bigfoot is a 1970 independently made low budget exploitation kaiju film produced by Anthony Cardoza and directed by Robert F. Slatzer.  The film stars a few well-known actors (and family namesakes) in the cast: John Carradine, Chris Mitchum, Joi Lansing, Doodles Weaver and Lindsay Crosby.  The low budget film attempts to transform the Pacific Northwest Sasquatch man-beast into an old-fashioned movie monster, ala King Kong (as a quote on the original movie poster proudly trumpets) or Godzilla,Gamera,Yonggary.  A remake of sorts was produced in 2012.

Caitlin Clarke: Caitlin Clarke (May 3, 1952 – September 9, 2004) was an American theater and film actress best known for her role as Valerian in the 1981 fantasy film "Dragonslayer" and for her role as Charlotte Cardoza in the 1998–1999 Broadway musical "Titanic".

Harry Potter and the Prisoner of Azkaban: Harry Potter and the Prisoner of Azkaban is the third novel in the "Harry Potter" series, written by J. K. Rowling.  The book follows Harry Potter, a young wizard, in his third year at Hogwarts School of Witchcraft and Wizardry.  Along with friends Ronald Weasley and Hermione Granger, Harry investigates Sirius Black, an escaped prisoner from Azkaban who they believe is one of Lord Voldemort's old allies.

Wizard (horse): Wizard (1806 – 30 June 1813) was a British Thoroughbred racehorse.  He won seven of his ten races, with all his wins coming at Newmarket.  In 1809 he won the 2000 Guineas Stakes, before finishing second in the Derby Stakes.  The following year he won a match race against his Derby conqueror Pope.  Throughout his racing career he was owned by Christopher Wilson and trained by Tom Perren.  Wizard only stood as a stallion for two years before dying in an accident in 1813.  His son Young Wizard won the Riddlesworth Stakes and was the runner-up in the Derby in 1817.

Harry Potter and the Philosopher's Stone: Harry Potter and the Philosopher's Stone is the first novel in the "Harry Potter" series and J. K. Rowling's debut novel, first published in 1997 by Bloomsbury.  It was published in the United States as Harry Potter and the Sorcerer's Stone by Scholastic Corporation in 1998.  The plot follows Harry Potter, a young wizard who discovers his magical heritage as he makes close friends and a few enemies in his first year at the Hogwarts School of Witchcraft and Wizardry.  With the help of his friends, Harry faces an attempted comeback by the dark wizard Lord Voldemort, who killed Harry's parents, but failed to kill Harry when he was just 15 months old.

Harry Potter: Harry Potter is a series of fantasy novels written by British author J. K. Rowling.  The novels chronicle the life of a young wizard, Harry Potter, and his friends Hermione Granger and Ron Weasley, all of whom are students at Hogwarts School of Witchcraft and Wizardry.  The main story arc concerns Harry's struggle against Lord Voldemort, a dark wizard who intends to become immortal, overthrow the wizard governing body known as the Ministry of Magic, and subjugate all wizards and muggles, a reference term that means non-magical people.

Dragonslayer: Dragonslayer is a 1981 American fantasy film directed by Matthew Robbins, from a screenplay he co-wrote with Hal Barwood.  It stars Peter MacNicol, Ralph Richardson, John Hallam and Caitlin Clarke.  The story, set in a fictional medieval kingdom, follows a young wizard who experiences danger and opposition as he attempts to defeat a dragon.

Dragon Steel: Dragon Steel is a fantasy novel by Chinese-American author Laurence Yep.  It was first published in 1985 and is the second book in his "Dragon" series.  In "Dragon Steel", Yep decided to expand on the dilemma faced by exiled dragon princess Shimmer, that of how to govern, since she had been exiled from the Inland Sea at a relatively young age by dragon standards.  He based her on experiences on a study of historical rulers, both those who had ruled poorly, and those who had "risen to the expectations of their people".  He also based the undersea dragon kingdom of Sambar XII on the "real ocean", inspired by the undergraduate courses in marine biology and oceanography he had taken at UC Santa Cruz.  The story picks up where "Dragon of the Lost Sea" left off.  Coming off their victory over the witch Civet, Shimmer and her human companion Thorn discover inner turmoil among the dragon kingdoms amidst increasing tensions between the humans and the dragons, gaining a new ally in the process.

Supporting paragraphs: Caitlin Clarke Dragonslayer
Answer: Dragonslayer