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 Q]: Event:PersonX wants PersonY back. Intent: 1) to block opposing opinions
[EX A]: Negative

[EX Q]: Event:PersonX fails PersonX's class. Intent: 1) to be helpful
[EX A]: Unknown

[EX Q]: Event:PersonX pours fuel on the fire. Intent: 1) to study
[EX A]:
Negative