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 volunteers PersonX's time. Intent: 1) to have a wedding.
[EX A]: Positive

[EX Q]: Event:PersonX makes PersonY jealous. Intent: 1) to be a friend 2) to celebrate a birthday
[EX A]: Negative

[EX Q]: Event:PersonX falls between the cracks. Intent:
[EX A]:
Unknown