51098
Her guiding actions reinforce her role as the " protectress of heroes , " or , as mythologian Walter Friedrich Otto dubbed her , the " goddess of nearness , " due to her mentoring and motherly probing .
 Walter Friedrich Otto
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Walter Friedrich Otto