Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Context: Joan spend all morning gathering pecan nuts from her tree. During the afternoon, she removed the shells. When the nuts were ready, she made pecan pies with them. 
 Sentence: She served pie for dessert, but her younger girl choked on a nut. 
 Character: Girl
Student:
None