See if you can find a word or words in the title or the lines of a song or even in a group's name. For instance: What is the 'number 1' considered in a song made famous by Three Dog Night? The answer would be "The Loneliest Number".
The Great Detective Sherlock Holmes has proved irresistible to many film makers. There have been many adaptations of the stories and many interpreters of Holmes himself. See how many of them you are familiar with -- it's not quite elementary.