79257
This is because he did one draft by himself ( granting him the first credit ) and a second draft collaborating with Robert Mark Kamen ( granting him the second credit ) .
 Robert Mark Kamen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Robert Mark Kamen