49194
According to the 1910 census , the population of Bačka numbered 704,563 people and was composed of : 43.2 % speakers of Hungarian ( 310,490 ) , 28.1 % speakers of South Slavic ( Serbo-Croatian ) language and 22.5 % speakers of German .
 location: Bačka
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: Bačka 
Answer:
 location: Bačka