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.
One example is below.
Q: Context: Jake was frustrated from work. 
 Sentence: He decided to go for a walk at night. 
 Character: Jack
A: to have fun
Rationale: Jack was frustrated from work; so, little walk at night can refresh his mood and he can have fun.
Q: Context: All of her life, Clara had wanted to play the trumpet. When she was in sixth grade, she could pick an instrument to learn. She ran to the trumpet and snatched it up. She went right home and began to practice. 
 Sentence: She was determined to become a great trumpet player! 
 Character: Clara
A:
None