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 is a substitute teacher. Intent: 1) to prevent a view 2) to hide something

Ex Output:
Unknown


Ex Input:
Event:PersonX pulls PersonY to safety. Intent: 1) to start fresh

Ex Output:
Unknown


Ex Input:
Event:PersonX uses PersonX's ___ to help. Intent: 1) to not get hurt

Ex Output:

Positive