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 wants PersonY dead. Intent:
Positive

Event:PersonX speeds down the highway. Intent: 1) to be nice
Negative

Event:PersonX carries out PersonX's threat. Intent: 1) to fulfill his committment 2) to make a record 3) prove his capability

Negative