Question: What is the currency in the country where Challenge of the Masters was held?

full_context: Document 1: Lo Wei: Lo Wei (sometimes spelled Lo Wai, 12 December 1918 – 20 January 1996) was a Hong Kong film director and film actor best known for launching the martial arts film careers of both Bruce Lee, in "The Big Boss" and "Fist of Fury", and Jackie Chan, in "New Fist of Fury".
Document 2: The Incredible Kung Fu Master: The Incredible Kung Fu Master (), also known as The Kung Fu Master () is a 1979 martial arts action comedy film directed by Joe Cheung and starring Sammo Hung and Stephen Tung, the latter in his first leading role. This film features an action direction from a number of famous action directors including Sammo Hung Stunt Team, Lam Ching-ying, Billy Chan, Bryan Leung and Yuen Biao.
Document 3: Malaysian ringgit: The Malaysian ringgit (/ ˈrɪŋɡɪt /; plural: ringgit; symbol: RM; currency code: MYR; formerly the Malaysian dollar) is the currency of Malaysia. It is divided into 100 sen (cents). The ringgit is issued by the Bank Negara Malaysia.
Document 4: Executioners from Shaolin: Executioners from Shaolin or "Hung Hsi Kuan" is a 1977 Shaw Brothers kung fu film directed by Lau Kar-leung. It is released as Shaolin Executioners outside of Hong Kong and as Executioners of Death in North America.
Document 5: The Master (1980 film): The Master (known previously in the United States as 3 Evil Masters) is a 1980 martial arts film produced in Hong Kong. It was directed by Lu Chin Ku and produced by the Shaw Brothers Studio.
Document 6: History of Chinese currency: The currency became legal tender in China commencing in 1937. It was later replaced by issues from puppet banks. However, the currency remained in force in Hong Kong between 1941 and 1945. Initially set at HK$2 = JMY1, the Hong Kong dollar was largely preferred by locals and hoarded away. In order to address this, the Japanese government made possession of Hong Kong dollars illegal in 1943 and required a conversion to JMY at 4 to 1.
Document 7: Australian dollar: The Australian dollar (sign: $; code: AUD) is the currency of the Commonwealth of Australia, including its external territories Christmas Island, Cocos (Keeling) Islands, and Norfolk Island, as well as the independent Pacific Island states of Kiribati, Nauru, Papua New Guinea, Tonga, Tuvalu, and Vanuatu. Within Australia, it is almost always abbreviated with the dollar sign ($), with A $or AU $sometimes used to distinguish it from other dollar - denominated currencies. It is subdivided into 100 cents.
Document 8: Shaolin Wooden Men: Shaolin Wooden Men () (Shao Lin mu ren xiang) is a 1976 Hong Kong action film, directed by Chen Chi-Hwa. It was made at Lo Wei's studio at Golden Harvest, during the post-Bruce Lee era. During this time Hong Kong film producers, including Lo, tried in vain to find "the next Bruce Lee".
Document 9: Drunken Master: Drunken Master () is a 1978 Hong Kong action comedy martial arts film directed by Yuen Woo-ping, and starring Jackie Chan, Yuen Siu-tien, and Hwang Jang-lee. The film was a success at the Hong Kong box office, earning two and a half times the amount of Chan's previous film, "Snake in the Eagle's Shadow", which was also considered a successful film. It is an early example of the comedic kung fu genre for which Jackie Chan became famous. The film popularised the Zui Quan ("drunken fist") fighting style. It was ranked number 3 on GamesRadar's list of 50 greatest kung fu movies of all time.
Document 10: Martial Arts of Shaolin: Martial Arts of Shaolin (, lit. "Southern and Northern Shaolin") aka Shaolin Temple 3: Martial Arts of Shaolin, is a 1986 Hong Kong martial arts film. It is notable as the only collaboration between film director Lau Kar-leung and actor Jet Li. The film was later released on Region 1 DVD by The Weinstein Company under the Dragon Dynasty imprint.
Document 11: Thai baht: The baht (; Thai: บาท, pronounced [bàːt]; sign: ฿; code: THB) is the official currency of Thailand. It is subdivided into 100 satang (สตางค์, pronounced [sātāːŋ]). The issuance of currency is the responsibility of the Bank of Thailand.
Document 12: Challenge of the Masters: Challenge of the Masters () is a 1976 martial arts-action film released in Hong Kong by Shaw Brothers, and directed by Lau Kar Leung.
Document 13: Bahamian dollar: The dollar (sign: $; code: BSD) has been the currency of The Bahamas since 1966. It is normally abbreviated with the dollar sign "$", or alternatively B$ to distinguish it from other dollar-denominated currencies. It is divided into 100 cents.
Document 14: Bermudian dollar: The Bermudian dollar (symbol: $; code: BMD; also abbreviated BD$; informally called the Bermuda dollar) is the official currency of the British Overseas Territory of Bermuda.  It is subdivided into 100 cents. The Bermudian dollar is not normally traded outside Bermuda, and is pegged to the United States dollar at a one-to-one ratio.  Both currencies circulate in Bermuda on an equal basis.
Document 15: Hong Kong dollar: The Hong Kong dollar (Chinese: 港幣; Cantonese Yale: Góng bàih; sign: HK $; code: HKD) is the official currency of Hong Kong. It is subdivided into 100 cents. The Hong Kong Monetary Authority is the governmental currency board and also the de facto central bank for Hong Kong and the Hong Kong dollar.
ground_truth: Hong Kong dollar
sub_queries: The country for Challenge of the Masters was what? Answer: Hong Kong
what is the currency in Hong Kong china Answer: Hong Kong dollar