input: 
  from typing import List
  
  def filter_greater_than_50(numbers: List[int]) -> List[int]:
      """Filters a list of integers to return only those greater than 50.
      
      >>> filter_greater_than_50([45, 12, 52, 89, 33, 99])
      [52, 89, 99]
      """
  
output:     return [num for num in numbers if num > 50]