You are provided with an "Event", "Intent" and "XEmotion" (PersonX's reactions for the given "Event"). Indicate PersonY's reaction (person feels) at the end of this event. Provide one reaction for PersonY. If there's nothing that can be implied, respond as None

Event:PersonX provides PersonY understanding. Intent: 1) to take a lesson home 2) to analyze the situation. XEmotion: 1) happy 2) contented
grateful

Event:PersonX left PersonY behind. Intent: 1) gain knowledge. XEmotion: 1) informed
sad

Event:PersonX joins PersonX's friends. Intent: 1) to not see something. XEmotion: 1) neutral

excited