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.

Let me give you an example: Context: Jake was frustrated from work. 
 Sentence: He decided to go for a walk at night. 
 Character: Jack
The answer to this example can be: to have fun
Here is why: Jack was frustrated from work; so, little walk at night can refresh his mood and he can have fun.

OK. solve this:
Context: I got a new puppy a few months ago. This puppy was very unruly and messy. I decided to take him to obedience school. After a long, hard time of training, he finally graduated! 
 Sentence: Now he is a very good, obedient dog. 
 Character: Puppy
Answer:
to follow instructions