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 inhibits ___ in vitro. Intent: 1) this is not a rule for people
[EX A]: Positive

[EX Q]: Event:PersonX waits tables. Intent:
[EX A]: Positive

[EX Q]: Event:PersonX loses control of PersonX's car. Intent: 1) to cheer for his team
[EX A]:
Unknown