10604
Note that the voltages of a voltage graph need not satisfy Kirchhoff 's voltage law , that the sum of voltages around a closed path is 0 ( the identity element of the group ) , although this law does hold for the derived graphs described below .
 person: Kirchhoff
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:
 person: Kirchhoff