66578
This publication preceded by two years Cramer 's publication of a generalization of the rule to " n " unknowns , now commonly known as Cramer 's rule .
 Cramer, Cramer
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Cramer, Cramer