Given the task definition, example input & output, solve the new input case.
Categorize the following sentence into one of the five different emotions: anger, confusion, joy, sadness and neutral.
Example: I KILL YOU SCUM.
Output: anger
The sentence expresses the emotion - anger by mentioning about killing someone. So, the output is anger.

New input case for you: I just enjoy using intelligent words...? I left him
Output:
joy