302090
The Society for Industrial Microbiology and Biotechnology ( SIMB ) is a professional organization for scientists in the microbiology field , established in 1949 as the Society for Industrial Microbiology ( SIM ) by Walter Ezekiel , Charles Thom , and Charles L. Porter .
 person: Charles Thom
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: Charles Thom 
Answer:
 person: Charles Thom