255001
Discovery and naming Mount Neustruyev was discovered and plotted from air photos by the Third German Antarctic Expedition ( 1938 – 1939 ) , led by Capt. Alfred Ritscher .
 person: Alfred Ritscher
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: Alfred Ritscher 
Answer:
 person: Alfred Ritscher