5048
Frequency-dependent impedances may be analyzed by considering the quantities power spectral density and the associated field quantities via the Fourier transform , which allows elimination of the frequency dependence in the analysis by analyzing the system at each frequency independently .
 person: Fourier
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: Fourier