9138
where the attenuation is usually an addition of absorption coefficient ( creation of electron-hole pairs ) or scattering ( for example Rayleigh scattering if the scattering centers are much smaller than the incident wavelength ) .
 person: Rayleigh
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: Rayleigh