281865
Objectives of the " B " reader program The original objective of the " B " reader examination was to identify physicians who were qualified to serve in national pneumoconiosis programs , particularly regarding epidemiological research and compensation of coal miners .
 None
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:  
Answer:
 None