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 buys a birthday cake. Intent: 1) to go over their authority.

Ex Output:
Positive


Ex Input:
Event:PersonX prevents ___ from voting. Intent: 1) to bury something

Ex Output:
Negative


Ex Input:
Event:It eventually told. Intent:

Ex Output:

Unknown