cobot
FaceBook Messenger Bot with Ruby & Sinatra
This chatbot returns the GPS coordinates of a country, city/town or address. You can message the CoBot FaceBook page here. However it's hosted on a free Heroku server which sleeps and the message isn’t sent until it wakes. So you will probably recieve a very delayed response. It works well on local server though.
Credit: https://hackernoon.com/smooth-coordinator-1427dce17f00