226800
After a serious injury during World War I , he was discharged from military service and continued his studies , graduating in 1917 with a doctorate in law .
 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