19499
Here , overproduction of dairy products led to the establishment of a marketplace within the domain of Zwaag , where excesses could be traded for other goods .
 location: Zwaag
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: Zwaag 
Answer:
 location: Zwaag