I want to know the answer to the following question:
What year did a protester attach a note to the door at Buckingham Palace saying it was to be sold?
All the background I'm provided with is that "In March 1864, a protester stuck a notice on the railings of Buckingham Palace that announced "these commanding premises to be let or sold in consequence of the late occupant's declining business".". Is that enough to answer the question?
Answer: yes