Question: In what year was the English poet, writer, and broadcaster who described himself in "Who's Who" as a "poet and hack", and had a poem included in the 1956 book "Noblesse Oblige: An Enquiry Into the Identifiable Characteristics of the English Aristocracy", appointed Poet Laureate of the United Kingdom?
{'answer': '1972', 'supporting_facts': [['Noblesse Oblige (book)', 1], ['John Betjeman', 0], ['John Betjeman', 1]]}