Instruct: What is the lowest number for all children when the child labour percentage is greater than 15.5 and the number of children in hazardous work is 170,500 while the number of economically active children is more than 351,700?
Output: SELECT MIN All Children ('000s) FROM table WHERE Child Labour (%) > 15.5 AND Children In Hazardous Work ('000s) = 170,500 AND Economically Active Children ('000s) > 351,700