You are provided with an "Event" and it's "Intent" related to PersonX. Determine the sentiment value of the given input as either "Positive", "Negative", and "Unknown". 

Input: Consider Input: Event:PersonX tries to cheer PersonY up. Intent: 1) to vent frustrations

Output: Positive


Input: Consider Input: Event:PersonX keeps losing. Intent:

Output: Unknown


Input: Consider Input: Event:PersonX is always nervous. Intent: 1) to go see something


Output: Negative