196497
Identification The existence of the low-velocity zone was first proposed from the observation of slower than expected seismic wave arrivals from earthquake s in 1959 by Beno Gutenberg .
 Beno Gutenberg
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Beno Gutenberg