input: Write a python function to write a list of people's information to an Excel file using xlwt.
  assert write_people_information([('John', 'Doe', 28), ('Jane', 'Smith', 34), ('Emily', 'Jones', 22)])==True
  assert write_people_information([('Alice', 'Brown', 45), ('Bob', 'Davis', 38)])==True
  assert write_people_information([])==True
output: def write_people_information(people):
      import xlwt
      from xlwt import Workbook
      
      # Create a new workbook and add a sheet
      wb = Workbook()
      sheet = wb.add_sheet('People Information')
      
      # Add headers
      headers = ['First Name', 'Last Name', 'Age']
      for col, header in enumerate(headers):
          sheet.write(0, col, header)
      
      # Write people information to the sheet
      for row, person in enumerate(people, start=1):
          for col, value in enumerate(person):
              sheet.write(row, col, value)
      
      # Save the workbook
      wb.save('people_information.xls')
      
      return True