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This process was superseded by the Solvay process in the late 19th century , which was in turn supplanted by the chloralkali process which we use today .
 person: Solvay
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: Solvay 
Answer:
 person: Solvay