TASK DEFINITION: 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". 
PROBLEM: Event:PersonX drives ___ away. Intent: 1) to catch up with them

SOLUTION: Positive

PROBLEM: Event:PersonX pulls PersonY's head. Intent:

SOLUTION: Negative

PROBLEM: Event:PersonX sees the dog. Intent: 1) to brief on a certain issue

SOLUTION:
Unknown