Definition: Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.
Input: sony corp. of america v. universal city studios, inc., 464 u.s. 417 (1984), also known as the "betamax case", is a decision by the supreme court of the united states which ruled that the making of individual copies of complete television shows for purposes of time shifting does not constitute copyright infringement, but is fair use.
Output:
sony corp. of america v. universal city studios, inc.