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 knows ___ very well. Intent: 1) tries to take wife
Unknown

Event:PersonX leaves the mall. Intent: 1) to have an audition.
Positive

Event:PersonX fights for PersonY's life. Intent: 1) to show smile 2) happiness

Positive