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Both the ATA and LATS risk stratification systems provided clinically meaningful graded estimates with regard to the ( 1 ) likelihood of achieving remission in response to initial therapy , ( 2 ) the likelihood of having persistent structural disease in response to initial therapy and at final follow - up , ( 3 ) the likely locations of the persistent structural disease ( loco - regional vs . distant metastases ) , ( 4 ) the likelihood of recurrence and ( 5 ) the likelihood of being NED at final follow - up .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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