16932
John Hanning Speke ( 1827–1864 ) ( discovered the source of the Nile )
 John Hanning Speke, Nile
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 John Hanning Speke, Nile