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 return one of the emotions which are expressed by the Character in the given sentence. For that you can use the Context; however, Context is not provided in all the inputs. Also, in some inputs, there can be zero emotion; for that return 'None'.
Teacher: Now, understand the problem? Solve this instance: Context: We had a lot of mice in 2011. We tried sticky traps but they sometimes escaped. We tried poison bait but they rarely ate them. I figured out snap traps work if they are under something. 
 Sentence: I killed several mice that way. 
 Character: I (myself)
Student:
proud