Q: 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: Jackie got up from the couch to go to the restroom. While she was gone, her brother took her seat. She returned to find him in her seat, and it angered her. She ended up wrestling her brother for the seat. 
 Sentence: While they wrestled, their little sister ended up taking the seat. 
 Character: Sister
A:
to irritate her siblings