69212
It portrays Kristian Birkeland ( 1867 – 1917 ) , magnetism researcher , inventor , and co-founder of Norsk Hydro .
 person: Kristian Birkeland; organization: Norsk Hydro
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Kristian Birkeland, Norsk Hydro 
Answer:
 person: Kristian Birkeland; organization: Norsk Hydro