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". 

Input: Consider Input: Event:PersonX asks PersonY what happened. Intent: 1) helpful

Output: Positive


Input: Consider Input: Event:It never heard. Intent:

Output: Unknown


Input: Consider Input: Event:PersonX increases the ___ at the expense. Intent: 1) to achieve his target


Output: Negative