Conversation so far:
Why did Rosemary Kennedy appear at British court?
Rosemary Kennedy was presented at court to King George VI and Queen Elizabeth at Buckingham Palace during her father's service as the United States Ambassador to the United Kingdom
How did the meetingwhere Rosemary Kennedy was presented at court to King George VI and Queen Elizabeth at Buckingham Palace during her father's service as the United States Ambassador to the United Kingdom go?
At the event, Rosemary Kennedy tripped and nearly fell
How did people react to Rosemary Kennedy tripping and nearly falling at the event?
The crowd made no sign, and the King and the Queen smiled as if nothing had happened

Question: What year was that?
Self-contained rewrite: What year was Rosemary Kennedy presented at court to King George VI and Queen Elizabeth at Buckingham Palace during her father's service as the United States Ambassador to the United Kingdom?