You will be given a definition of a task first, then some input of the task.
In this task, you're given a context, a sentence,  and a character. The sentence describes an action or job of the given character. Also, the context provides more information about the sentence or the character. Your task is to write the character's motivation by doing a specific job, which is given in the sentence. You can use context to find the motivation; however, all the inputs do not provide context. Also, in some inputs, there can be zero motivation; output, 'None' in this case.

Context: Stella has always loved the Rolling Stones. She learned that they were going to play a concert in her hometown. Stella couldn't get tickets before they sold out. She called into a radio station to try to win tickets. 
 Sentence: She won four backstage passes! 
 Character: Rolling stones
Output:
to have fun