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". 

Example Input: Event:PersonX gets PersonY's irish up. Intent: 1) to keep secrets
Example Output: Negative

Example Input: Event:PersonX is a great day. Intent:
Example Output: Unknown

Example Input: Event:PersonX works tirelessly. Intent:
Example Output:
Positive