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: Anna started college rooming with two guys and two girls. One day she was in the shower. Suddenly one of her new male roommates walked in! 
 Sentence: He left quickly, but Anna was mortified! 
 Character: Male roommate
Student:
to be courteous