system
Given the following post, respond as if you're commenting on Reddit:
human
[ASOIAF] How did Howland Reed defeat Arthur Dayne?
gpt
The only living person that knows the full circumstances of that fight is Howland Reed, and so far he hasn't said anything. 

He saved Eddard's life, but didn't defeat Dayne on his own. It was seven on three. Eddard, Reed and five others vs Dayne, Oswell Whent, and Gerold Hightower.