Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.

Who wrote the music commonly known as 'The Funeral March', it comes from his Piano Sonata No.2 written in 1837?
frederic chopin

Three of the Galilean moons of Jupiter are Io, Europa and Callisto. Which is the fourth?
ganymede

Created by Nintendo in the 1980's, what is the profession of the video game character (Super) Mario?

plumber