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". 

Q: Event:PersonX starts to sink. Intent: 1) to entertain people

A: Negative
****
Q: Event:PersonX spills soda. Intent: 1) to be sociable

A: Unknown
****
Q: Event:PersonX knows PersonY's business. Intent: 1) helpful 2) share knowledge 3) to teach

A:
Unknown
****