user: Question: 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 170500 while the number of economically active children is more than 351700?
Columns: ["All Children ('000s)", "Economically Active Children ('000s)", 'Economically Active Children (%)', "Child Labour ('000s)", 'Child Labour (%)', "Children In Hazardous Work ('000s)", 'Children In Hazardous Work (%)']
Types: ['real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: [838800.0, 109700.0, 13.1, 109700.0, 13.1, 60500.0, 7.2]
SQL:

assistant: SELECT MIN("All Children ('000s)") FROM "Table" WHERE "Child Labour (%)" > 15.5 AND "Children In Hazardous Work ('000s)" = 170500.0 AND "Economically Active Children ('000s)" > 351700.0;