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 takes PersonY's revenge. Intent: 1) to be productive 2) to give sometihng away
Example Output: Negative

Example Input: Event:PersonX spends PersonY's time. Intent: 1) a stable situation 2) to make a repair
Example Output: Negative

Example Input: Event:PersonX is a substitute teacher. Intent: 1) to prevent a view 2) to hide something
Example Output:
Unknown