input: Write a python function to create instances of the Employee class and return a list of employees' names.
  assert create_employees([("John", 1, 50000, "Developer"), ("Jane", 2, 60000, "Designer")]) == ["John", "Jane"]
  assert create_employees([("Alice", 3, 55000, "Manager"), ("Bob", 4, 48000, "Analyst")]) == ["Alice", "Bob"]
  assert create_employees([("Charlie", 5, 70000, "CEO")]) == ["Charlie"]
output: def create_employees(employee_data):
      class Employee:
          def __init__(self, name, id, salary, position):
              self.name = name
              self.id = id
              self.salary = salary
              self.position = position
      
      employees = [Employee(name, id, salary, position) for name, id, salary, position in employee_data]
      return [employee.name for employee in employees]