316498
Cost of sugar production in Guigang is high due to a multitude of small farms growing canes with low sugar content , resulting in large amounts of by-products that go un-utilized by small-scale refineries and generate high levels of emissions to the air , water , and soil .
 location: Guigang
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: Guigang 
Answer:
 location: Guigang