Information:  - Television Broadcasts Limited, commonly known as TVB, was founded as the first wireless commercial television station in Hong Kong. TVB runs five free-to-air television channels in Hong Kong, and is one of two free-to-air terrestrial television broadcasters in Hong Kong, and one of the largest commercial Chinese programme producers in the world. It commenced broadcasting on 19 November 1967. It has a staff of about 4,500. Its commercial rival for free-to-air terrestrial television broadcasts is Asia Television (ATV), whilst the government-owned Radio Television Hong Kong (RTHK) produces television programmes, but does not itself broadcast them.  - Once Upon a Time in Triad Society ( Fit / Wong Kok cha ' fit ' yan ) is a 1996 spin - off film of the Young and Dangerous film series . This first spin - off movie focuses on Ugly Kwan , played by Francis Ng .  - Young and Dangerous is a 1996 Hong Kong crime film about a group of triad members, detailing their adventures and dangers in a Hong Kong Triad society. Directed by the film's cinematographer Andrew Lau, the film features a large ensemble cast, which includes Ekin Cheng, Jordan Chan, Francis Ng, Gigi Lai and Simon Yam.  - Triumph in the Skies is a Hong Kong drama television series that premiered on TVB in 2003. The drama tells the lives of pilots working for the fictional Solar Airways based on Hong Kong's Cathay Pacific.  - Francis Ng Chun-yu (born 21 December 1961) is a Hong Kong actor and director. He is known for the TVB series, "Triumph in the Skies" and for films such as "Young and Dangerous", "Once Upon a Time in Triad Society" and "The Mission".  - Once Upon a Time in Triad Society (Fit) is a 1996 Hong Kong action film produced and directed by Cha Chuen-yee. The film is a spin-off of the "Young and Dangerous" film series, focusing on the character of Ugly Kwan, played by Francis Ng.    Given the paragraphs above, decide what entity has the relation 'genre' with 'action film'.
Answer:
once upon a time in triad society