Sentence 1: The city park was putting on a public movie. 
 Sentence 3: I set up a blanket and ate snacks while the movie played 
 Sentence 4:  I finished the movie and picked up my stuff 
 Sentence 5:  I went back to my car and drove home 
 Option 1: I stopped by when the movie was starting. 
 Option 2: I stopped by when the movie was already ending.