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Since its inception , variations on the original thesis have arisen , including statements about what can physically be realized by a computer in our universe ( physical Church-Turing thesis ) and what can be efficiently computed ( Church–Turing thesis ( complexity theory ) ) .
 Church-Turing, Church–Turing
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Church-Turing, Church–Turing