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 leaves in a huff. Intent: 1) to discover something.
Negative

Event:PersonX sees PersonY later. Intent: 1) to bring two things together
Unknown

Event:PersonX returns PersonY's attention. Intent: 1) to be liked

Positive