1442
Mortal kombat little known to {@Ed Boon@} and {@John Tobias@} is real but its every 1000 years the elder gods wage war here on earth for the power over us mortals .
 Mortal kombat, Ed Boon, John Tobias
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: group, creative work, person, event, product, location, corporation 
Text: {0} 
Answer:
 Mortal kombat, Ed Boon, John Tobias