3009
A particle detector then records the number of ions detected in the stream , but since the volume of ( and , needed for calibration ) is too great for individual ion detection , counts are determined by measuring the electric current created in a Faraday cup .
 person: Faraday
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: Faraday 
Answer:
 person: Faraday