Detailed Instructions: 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.
Problem:Context: Todd was riding his dirt bike in the woods. He began to ride down a small dirt road away from his friends. While on the road, his dirt bike began to stop working. Suddenly, Todd's dirt bike ran out of gas and he was alone. 
 Sentence: Todd had to push the dirt bike five miles back to his truck. 
 Character: Friends
Solution:
None