1755
This leads to a peak structure that can be seen in the above shown energy spectrum of ( Figure 1 , the first peak left of the Compton edge ) , the so-called backscatter peak .
 location: Compton
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Compton