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The estate 's second owner , Jay Gould , rebuilt the conservatory in 1881 , hiring the firm of Lord & Burnham to manufacture his greenhouse .
 person: Jay Gould; organization: Lord & Burnham
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: Jay Gould, Lord & Burnham 
Answer:
 person: Jay Gould; organization: Lord & Burnham