19040
Early semi-mechanical installations with common control components existed , for example rotary systems in Sweden and France in 1915 , and the first panel switches in Newark , New Jersey , also in 1915 .
 Sweden, France, Newark, New Jersey
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sweden, France, Newark, New Jersey