Task: Explanation
Input (English): Al Jolson (born Asa Yoelson; May 26, 1886 – October 23, 1950) was an American singer, film actor, and comedian. At the peak of his career, he was dubbed "The World's Greatest Entertainer." His performing style was brash and extroverted, and he popularized a large number of songs that benefited from his "shamelessly sentimental, melodramatic approach." Numerous well-known singers were influenced by his music, including Bing Crosby, David Bowie, Bob Dylan, Rod Stewart and others. Dylan once referred to him as "somebody whose life I can feel." Broadway critic Gilbert Seldes compared him to the Greek god Pan, claiming that Jolson represented "the concentration of our national health and gaiety." Question: What American singer, film actor and comedian, suddenly stood up during a performance of Gershwin's Liza (All the Clouds'll Roll Away) and started singing?   Answer: Al Jolson
Output (English): Al Jolson born Asa Yoelson; May 26, 1886 – October 23, 1950 was an American singer, film actor, and comedian.