input: def construct_student_marks() -> dict:
      """Construct a python dictionary containing student names and marks as key-value pairs.
      >>> construct_student_marks()
      {'John': 90, 'Levi': 85, 'Jill': 95, 'Sara': 75}
      """
      return {
          "John": 90,
          "Levi": 85,
          "Jill": 95,
          "Sara": 75
      }
output:     return {
          "John": 90,
          "Levi": 85,
          "Jill": 95,
          "Sara": 75
      }