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Val recognised the need for a commercial sized composting system for New Smithfield Market and choose a Vertical Composting Unit ( VCU ) system as the preferred technology ; Emma Smith was recruited as a waste auditor in November 2001 to undertake a waste composition analysis of Smithfield Market 's waste .
 None
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:  
Answer:
 None