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 grinds ___ for a week. Intent: 1) to be in a silent atmosphere

A: Positive
****
Q: Event:PersonX really love PersonY. Intent: 1) tell a story 2) warn others

A: Unknown
****
Q: Event:PersonX searches everywhere for PersonY. Intent: 1) someone to help him 2) others skills also to be used

A:
Negative
****