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 is a huge hit. Intent:
[EX A]: Unknown

[EX Q]: Event:PersonX visits PersonY's grandma. Intent: 1) to be alone
[EX A]: Positive

[EX Q]: Event:PersonX attacks the enemy 's ___. Intent: 1) to be efficient
[EX A]:
Negative