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 disappears around the corner. Intent: 1) to help

Ex Output:
Positive


Ex Input:
Event:PersonX is so happy to see PersonY. Intent:

Ex Output:
Unknown


Ex Input:
Event:PersonX feels special. Intent: 1) to be helpful

Ex Output:

Unknown