31306
In 1897 , Karl Ferdinand Braun introduced the cathode ray tube as part of an oscilloscope , a crucial enabling technology for electronic television .
 person: Karl Ferdinand Braun
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: Karl Ferdinand Braun 
Answer:
 person: Karl Ferdinand Braun