131220
The STI consists of six concentric fare zones centered in Barcelona , numbered 1 – 6 , which are further divided into sectors lettered A–H .
 Barcelona
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Barcelona