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 asks PersonY what happened. Intent: 1) helpful
[EX A]: Positive

[EX Q]: Event:PersonX costs PersonY dollars. Intent:
[EX A]: Unknown

[EX Q]: Event:PersonX volunteers at the soup kitchen. Intent: 1) to sense
[EX A]:
Positive