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". 

[EX Q]: Event:PersonX grinds ___ for a week. Intent: 1) to be in a silent atmosphere
[EX A]: Positive

[EX Q]: Event:PersonX forgets to apply sunscreen. Intent: 1) to inform
[EX A]: Unknown

[EX Q]: Event:PersonX performs PersonY function. Intent:
[EX A]:
Positive