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? If you are still confused, see the following example:
Context: Jake was frustrated from work. 
 Sentence: He decided to go for a walk at night. 
 Character: Jack
Solution: to have fun
Reason: Jack was frustrated from work; so, little walk at night can refresh his mood and he can have fun.

Now, solve this instance: Context: Jason has always wanted to learn calligraphy. He collects old letters written in this style and he loves them. He found online that you can take calligraphy lessons. Jason signed up and practiced on his calligraphy for a year. 
 Sentence: Now Jason is a pro and can write his own fancy letters. 
 Character: Jason
Student:
to be able to do something he liked