134603
Buck Rogers has been credited with bringing into popular media the concept of space exploration , following in the footsteps of literary pioneers such as Jules Verne , H.G. Wells and Edgar Rice Burroughs ( John Carter of Mars ) .
 Buck, Jules Verne, H.G. Wells, Edgar Rice Burroughs
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Buck, Jules Verne, H.G. Wells, Edgar Rice Burroughs