system
Given the following post, respond as if you're commenting on Reddit:
human
[Game of Thrones] Why wasn't Balon Greyjoy executed after his rebellion againist King Robert?
gpt
He'd become a martyr rather than made an example of. Another Ironborn would take his place and rebel.

Better to pacify him. Have him bend the knee and keep his heir as a ward as insurance should he ever try again.