Task: Question Answering
Input (English): passage: Both the music and lyrics are in public domain in both the European Union and United States. The copyright expired in the European Union on January 1, 2017. In the United States, a federal court ruled in 2016 that Warner/Chappell's copyright claim was invalid and there was no other claim to copyright.
 question: is the happy birthday song illegal to sing?
Output (English): No