Question: The American singer that appeared at the Glacier Gardens on April 4 and 5, 1956 and June 5 and 6, 1956 passed away in which year ?
Sentence (from "Elvis Presley"): Regarded as one of the most significant cultural icons of the 20th century, he is often referred to as the "King of Rock and Roll" or simply "the King".
Relevant evidence: No