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 imagines what PersonY was seeing. Intent: 1) to find something out 2) socialize 3) start an argument
Positive

Event:PersonX believes PersonX's luck. Intent: 1) to soar the skies
Unknown

Event:PersonX shakes PersonX's ___ in disbelief. Intent:

Positive