4344
However , personal and professional antagonisms with two Prime Ministers Keith Holyoake then John Marshall prevented him from attaining high rank in those administrations , and he retired in 1972 .
 person: Keith Holyoake; person: John Marshall
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Keith Holyoake; person: John Marshall