story: Pat had a song stuck in her head all day. She tried to ignore it but it wouldn't go away. When her mind when blank she heard the song. She tried to listen to the radio until the song was flushed out. After a few country songs she forgot all about the first one.
 selected sentence: She tried to ignore it but it wouldn't go away.
The song remains stuck in Pat's head >Causes/Enables> Pat hears the song when her mind is blank