You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Copyright_infringement

Context:
The first criminal provision in U.S. copyright law was added in 1897, which established a misdemeanor penalty for "unlawful performances and representations of copyrighted dramatic and musical compositions" if the violation had been "willful and for profit." Criminal copyright infringement requires that the infringer acted "for the purpose of commercial advantage or private financial gain." 17 U.S.C. § 506. To establish criminal liability, the prosecutor must first show the basic elements of copyright infringement: ownership of a valid copyright, and the violation of one or more of the copyright holder's exclusive rights. The government must then establish that defendant willfully infringed or, in other words, possessed the necessary mens rea. Misdemeanor infringement has a very low threshold in terms of number of copies and the value of the infringed works.

Question:
When was the first criminal part of copyright law in the U.S. added?

1897