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". 

Event:PersonX is still angry. Intent: 1) to eat a hamburger and fries
Unknown

Event:PersonX spends many hours. Intent: 1) make person y stronger
Positive

Event:PersonX thanks the ___ for PersonY's contributions. Intent: 1) to surprise people.

Positive