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". 

Q: Event:PersonX tears PersonX's hair out. Intent: 1) to scare it away

A: Negative
****
Q: Event:PersonX shifts in PersonY's seat. Intent: 1) to meet friend

A: Unknown
****
Q: Event:PersonX hears ___ back. Intent: 1) to help him

A:
Unknown
****