316134
The searchlights were based around extremely high-powered Carbon Arc lamp s. 60 Centimetre These were developed in the late 1930s , with a 60 centimetre diameter parabolic glass reflector and was powered by an 8 kilowatt generator .
 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