Task: Explanation
Input (English): Happy Valley is a metropolitan suburb of Adelaide, South Australia. It is located 20 km south of the Central Business District of Adelaide. Question: The 2016 City of Onkaparinga ATP Challenger took place in a metropolitan suburb how far south of the Central Business District of Adelaide? Answer: 20 km
Output (English):  It is located 20 km south of the Central Business District of Adelaide.