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Passenger service to Allentown and Bethlehem ceased in 1981 when several rail operators opted to curtail long-distance services .
 Allentown, Bethlehem
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Allentown, Bethlehem