Given the question: Information:  - The Daleks (also known as The Mutants and The Dead Planet) is the second serial in the British science fiction television series "Doctor Who", which was first broadcast in seven weekly parts from 21 December 1963 to 1 February 1964. It is the first serial to be entirely set on an alien planet. It was written by Terry Nation and directed by Christopher Barry and Richard Martin. This story marks the first appearance of the Doctor's greatest extraterrestrial enemies, the Daleks, and is also the first to feature recurring Skaro people, the Thals.  - The Dalek Invasion of Earth is the second serial of the second season in the British science fiction television series Doctor Who , which originally aired in six weekly parts from 21 November to 26 December 1964 . It was the second appearance of the Daleks and thus the first time an enemy re-appeared . This serial marks the final regular appearance of Carole Ann Ford as companion Susan Foreman . It was later adapted into the movie Daleks -- Invasion Earth : 2150 A.D. starring Peter Cushing .  - Peter Wilton Cushing, OBE (26 May 191311 August 1994) was an English actor and a BAFTA TV Award Best Actor winner in 1956. He is mainly known for his prolific appearances in Hammer Films, in which he played strong character roles like the sinister scientist Baron Frankenstein, Sherlock Holmes and the vampire hunter Dr. Van Helsing, among many other roles. He appeared frequently opposite Christopher Lee and, occasionally, Vincent Price. A familiar face on both sides of the Atlantic, Cushing is best known outside the Hammer productions for playing Dr. Who in "Doctor Who and the Daleks" (1965) and "" and his performance as Grand Moff Tarkin in "Star Wars" (1977). Cushing's likeness was extensively recreated using digital effects in "" (2016) which raised questions about the morality of using a deceased actor's likeness.  - Sir Christopher Frank Carandini Lee (27 May 1922  7 June 2015) was an English actor, singer, and author. With a career spanning nearly 70 years, Lee initially portrayed villains and became best known for his role as Count Dracula in a sequence of Hammer Horror films. His other film roles include Francisco Scaramanga in the James Bond film "The Man with the Golden Gun" (1974), Saruman in "The Lord of the Rings" film trilogy (20012003) and "The Hobbit" film trilogy (20122014), and Count Dooku in the final two films of the "Star Wars" prequel trilogy (2002 and 2005).  - Sherlock Holmes is a fictional private detective created by British author Sir Arthur Conan Doyle. Known as a "consulting detective" in the stories, Holmes is known for a proficiency with observation, forensic science, and logical reasoning that borders on the fantastic, which he employs when investigating cases for a wide variety of clients, including Scotland Yard.   - Doctor Who is a British science-fiction television programme produced by the BBC since 1963. The programme depicts the adventures of a Time Lord called "The Doctor", an extraterrestrial being from the planet Gallifrey. He explores the universe in a time-travelling space ship called the TARDIS. Its exterior appears as a blue British police box, which was a common sight in Britain in 1963 when the series first aired. Accompanied by a number of companions, the Doctor combats a variety of foes, while working to save civilisations and help people in need.  - The Daleks are a fictional extraterrestrial race of mutants principally portrayed in the British science fiction television programme "Doctor Who". The Daleks were conceived by science-fiction writer Terry Nation and first appeared in the 1963 "Doctor Who" serial "The Daleks", in the shells designed by Raymond Cusick.    Given the information above, choose from the list below the object entity that exhibits the relation 'director' with the subject 'the dalek invasion of earth'.  Choices: - christopher barry  - christopher frank  - richard martin  - variety
The answer is:
richard martin