Task: Program Execution
Input (English): Sentence: 'a woman holds a frisbee close by a second woman that is eying the frisbee with an arm held out while two other players stand waiting in the background'. Reverse all words of length '4' in the given sentence.
Output (English): a woman holds a frisbee close by a second woman taht is eying the frisbee htiw an arm dleh out while two other players stand waiting in the background