15128
A distinct family of cytochromes is the cytochrome P450 family , so named for the characteristic Soret peak formed by absorbance of light at wavelengths near 450 " nm when the heme iron is reduced ( with sodium dithionite ) and complexed to carbon monoxide .
 location: Soret
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Soret 
Answer:
 location: Soret