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". 

Ex Input:
Event:PersonX sets PersonY free. Intent: 1) to win the problem definitely

Ex Output:
Positive


Ex Input:
Event:PersonX loves football. Intent: 1) to make the table

Ex Output:
Unknown


Ex Input:
Event:PersonX rings in PersonY's ears. Intent: 1) to make new friends

Ex Output:

Negative