Question: What year did Alfhild Hovdan initiate the tradition of donating a christmas tree to the people of Britain?
Sentence (from "Alfhild Hovdan"): Alfhild Hovdan (née Olsen; 13 September 1904 – 20 February 1982) was a Norwegian journalist, and later tourist manager for the city of Oslo for more than forty years.
Relevant evidence: No