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 feels really bad. Intent: 1) to communicate with someone
[EX A]: Negative

[EX Q]: Event:PersonX tries to cheer PersonY up. Intent: 1) to vent frustrations
[EX A]: Positive

[EX Q]: Event:PersonX sees the look on PersonY's face. Intent: 1) to be stealthy
[EX A]:
Unknown