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 finds ___ on the ground. Intent:
Example Output: Unknown

Example Input: Event:PersonX prevents PersonY from entering. Intent: 1) to make sure his son is ok
Example Output: Negative

Example Input: Event:PersonX tries really hard. Intent:
Example Output:
Unknown