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_ How appealing was a recent offer made by Sprint Communications Co . to give buyers of a Sprint PCS telephone and a calling plan a free ` ` pre - owned phone ' ' ?
 Sprint Communications Co, Sprint PCS, buyers of a Sprint PCS telephone and a calling plan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 Sprint Communications Co, Sprint PCS, buyers of a Sprint PCS telephone and a calling plan