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Likening them to descriptions of rattling and chattering auditory phenomenon described in encounters with the Hayyoth in the Book of Ezekiel , Rick Strassman notes that participants in his studies , when reporting encounters with the alleged entities , have also described loud auditory hallucinations , such as one subject reporting typically " the elves laughing or talking at high volume , chattering , twittering " .
 Rick Strassman
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rick Strassman