61563
Burkina Faso and Ghana use different rail gauges and this break-of-gauge can be overcome to a greater or lesser extent with a number of methods .
 Burkina Faso, Ghana
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Burkina Faso, Ghana