sample.txt

{
  "text": "find employees with salary greater than 50000",
  "tables": {
    "employees": ["id", "name", "salary"]
  }
}

{
  "text": "calculate total sales per region",
  "tables": {
    "sales": ["id", "amount", "region"]
  }
}

{
  "text": "show departments with more than 10 employees",
  "tables": {
    "departments": ["id", "name"],
    "employees": ["employee_id", "department_id"]
  }
}