input: Write a function to create a lambda expression in Python to filter a list of integers greater than 50. Return the filtered list.
  assert filtered_list([45, 12, 52, 89, 33, 99])==[52, 89, 99]
  assert filtered_list([55, 10, 63, 40, 72])==[55, 63, 72]
  assert filtered_list([50, 51])==[51]
  assert filtered_list([49, 50])==[]
  assert filtered_list([])==[]
output: def filtered_list(lst):
      return list(filter(lambda x: x > 50, lst))