45983
From 1663 – 1673 he opened a publishing house in Amsterdam and Rotterdam producing Socinian works , including 1665 – 1668 ( with supplement 1692 ) the Biblioteca fratrum Polonorum .
 Amsterdam, Rotterdam
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Amsterdam, Rotterdam