Generate an approximately fifteen-word sentence that describes all this data: Avengers: Age of Ultron YEAR 2015; FILM Avengers: Age of Ultron; Avengers: Age of Ultron PUBLISHER Marvel Comics; List of American superhero films; Marvel Comics NOTES Sequel to 2012's The Avengers
2015's Avengers: Age of Ultron was the sequel to 2012's The Avengers