Given the question: Information: - Ringo Lam Ling-Tung (Cantonese: Lam Ling-tung), is a Hong Kong film director, producer, and screenwriter. Born in Hong Kong in 1955, Lam initially went to an acting school. After finding he preferred making films to acting, he went to Canada to study film. In 1983, he returned and began filming comedy films. After the commercial success of his film "Aces Go Places IV", he was allowed to develop his own film. Lam directed "City on Fire" in 1987, which led him to winning his first Hong Kong Film Award, and has been extensively referenced as the fundamental inspiration for Quentin Tarantino's first film, "Reservoir Dogs". - School on Fire ( ) is a 1988 Hong Kong action film directed by Ringo Lam . The film involves a young schoolgirl Chu Yuen Fong ( Fennie Yuen ) who becomes caught in a tragic stranglehold of triad activity after she testifies over a triad beating . When this news reaches the triad leader Brother Smart ( Roy Cheung ) , Yuen Fong must pay him protection money for what she has done as events begin to escalate . - Hong Kong, officially the Hong Kong Special Administrative Region of the People's Republic of China, is an autonomous territory on the Pearl River Delta of East Asia. Macau lies across the delta to the west, and the Chinese province of Guangdong borders the territory to the north. With a total land area of and a population of over 7.3 million of various nationalities, it ranks as the world's fourth most densely populated sovereign state or territory. - Reservoir Dogs is a 1992 American crime thriller film that depicts the events before and after a botched diamond heist. The film was the feature-length debut of writer and director Quentin Tarantino, and stars Harvey Keitel, Michael Madsen, Steve Buscemi, Chris Penn, Lawrence Tierney and Tim Roth. Tarantino and criminal-turned-author Edward Bunker have minor roles. It incorporates many themes that have become Tarantino's hallmarks: violent crime, pop culture references, profanity, and nonlinear storytelling. - The Hong Kong Film Awards (HKFA), founded in 1982, is an annual film awards ceremony in Hong Kong. The ceremonies are typically in April. The awards recognise achievement in various aspects of filmmaking, such as directing, screenwriting, acting and cinematography. The awards are the Hong Kong equivalent to the American Academy Awards and the British BAFTAs. - Aces Go Places IV, also known in the United States as Mad Mission 4: You Never Die Twice, is a 1986 Hong Kong action-comedy film directed by Ringo Lam, and starring Samuel Hui, Karl Maka, Sylvia Chang and Sally Yeh. - Roy Cheung Yiu-Yeung (born 20 July 1964 in Hong Kong) is a Hong Kong-based actor, best known on-screen for his roles as Triad gangsters in a number of films. Given the information, choose the subject and object entities that have the relation of 'producer'.
The answer is:
school on fire , karl maka