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Hubbs completed his studies at Stanford University , following particularly the ichthyologist Charles Henry Gilbert , a disciple of Jordan .
 Hubbs, Stanford University, Charles Henry Gilbert, Jordan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hubbs, Stanford University, Charles Henry Gilbert, Jordan