153923
After the annexation of Austria , the planned network was expanded to include the Ostmark , and a second sod-breaking ceremony for the first Reichsautobahn on formerly Austrian territory took place near Salzburg on April 7 , 1938 .
 location: Salzburg
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: Salzburg 
Answer:
 location: Salzburg