TASK DEFINITION: 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". 
PROBLEM: Event:PersonX shakes PersonX's ___ in disbelief. Intent:

SOLUTION: Positive

PROBLEM: Event:PersonX leaves in a huff. Intent: 1) to discover something.

SOLUTION: Negative

PROBLEM: Event:PersonX is completely surprised. Intent: 1) they want to compete 2) they dispute the other person's stance

SOLUTION:
Unknown