86991
Peter Michael Imbert , Baron Imbert CVO QPM ( born 27 April 1933 ) was Commissioner of the Metropolitan Police Service from 1987 to 1993 , and prior to that appointment Chief Constable of Thames Valley Police from 1979 to 1985 .
 person: Imbert; person: Baron Imbert; organization: Metropolitan Police Service; organization: Police
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: Imbert, Baron Imbert, Metropolitan Police Service, Police 
Answer:
 person: Imbert; person: Baron Imbert; organization: Metropolitan Police Service; organization: Police