92921
With the construction of the extensions and connecting turnpikes , the highway was envisioned to be a part of a system of toll roads stretching from Maine to Chicago .
 Maine, Chicago
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:
 Maine, Chicago