206084
Hewish considered various possibilities , and suggested that irregularities in the solar corona would cause scattering by refraction and could produce the irregularities he observed .
 person: Hewish
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: Hewish 
Answer:
 person: Hewish