input: Write a function to create a lambda expression in Python to filter a list of integers greater than 50. If the list is empty then return an empty list.
  assert filter_greater_than_50([45, 12, 52, 89, 33, 99])==[52, 89, 99]
  assert filter_greater_than_50([51, 52, 53, 54])==[51, 52, 53, 54]
  assert filter_greater_than_50([45, 33, 22, 11])==[]
  assert filter_greater_than_50([])==[]
output: def filter_greater_than_50(lst):
      return list(filter(lambda x: x > 50, lst))