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

Event:PersonX fails PersonX's class. Intent: 1) to be helpful
Unknown

Event:PersonX protects ___ from discrimination. Intent: 1) them to enjoy the craft as much as them

Negative