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 complains to PersonY's mother. Intent:
[EX A]: Negative

[EX Q]: Event:PersonX sells PersonX's old car. Intent: 1) to have one
[EX A]: Positive

[EX Q]: Event:PersonX changes colors. Intent: 1) to harass persony
[EX A]:
Unknown