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 pulls the wool over PersonY's eyes. Intent: 1) yes
Example Output: Negative

Example Input: Event:PersonX sells PersonX's old car. Intent: 1) to have one
Example Output: Positive

Example Input: Event:PersonX buys a book. Intent: 1) to go
Example Output:
Positive