Premise: Superman ( informally titled Superman : The Movie in some listings and reference sources ) is a 1978 superhero film directed by Richard Donner and based on the DC Comics character of the same name . The most expensive film made up to that point with a budget of $ 55 million , Superman was released in December 1978 to critical acclaim and financial success , earning $ 300 million during its original theatrical run .
Hypothesis: 1978 was the year Superman was released.
Label: ENTAILMENT