How do I reset the language. The wrong one was selected on setup

I accidentally selected Spanish instead of English whilst setting up my new Apple TV4.

SOLUTION:
I ended up calling Apple support - the solution was to complete the set-up process in Spanish (mostly selecting the boxes on the left-hand side; skipping the apple ID entry, but entering my wifi network password). Once the home screen appeared, I had to choose the system icon (the cog wheel), then scroll down to 'system', and then select the middle option under the second heading (the translation would have been something like 'restore to factory settings'). After selecting the options to proceed, my Apple TV then rebooted and came up with the language screen again - this time I carefully selected 'English'!

Good luck!

Cheers!
Merrilly

Australia