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". 
--------
Question: Event:PersonX plays a prank. Intent:

Answer: Negative


Question: Event:PersonX sees all the animals. Intent:

Answer: Unknown


Question: Event:PersonX comes across PersonY. Intent: 1) to be helpful

Answer:
Unknown