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" Heartland " is the title of a song written by Steve Dorff and John Bettis , and recorded by American country music singer George Strait .
 Steve Dorff, John Bettis, American, George Strait
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Steve Dorff, John Bettis, American, George Strait