Assign an appropriate age rating to the following movie: 

Movie: Avengers: Endgame
Movie: Avengers: Endgame
PG-13 (Parents Strongly Cautioned)
<sys>[INST] Assign an appropriate age rating to the following movie: 

Movie: Avengers: Endgame [/INST] Input:
Movie: Avengers: Endgame </sys>