51283
Tractable problems are frequently identified with problems that have polynomial-time solutions ( " P " , " PTIME " ) ; this is known as the Cobham–Edmonds thesis .
 Cobham–Edmonds
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Cobham–Edmonds