# QUESTION
Although lead has not been used for writing since antiquity, lead poisoning from pencils was not uncommon. Until the middle of the 20th century the paint used for the outer coating could contain high concentrations of lead, and this could be ingested when the pencil was sucked or chewed.

Answer this question: where does lead in a pencil come from?
# ANSWER
This is the relevant information: Until the middle of the 20th century the paint used for the outer coating could contain high concentrations of lead, and this could be ingested when the pencil was sucked or chewed.
FINAL ANSWER: the paint used for the outer coating


# QUESTION
Heart of Darkness (1899) is a novella by Polish-English novelist Joseph Conrad, about a voyage up the Congo River into the Congo Free State, in the heart of Africa, by the story's narrator Charles Marlow. Marlow tells his story to friends aboard a boat anchored on the River Thames, London, England. This setting provides the frame for Marlow's story of his obsession with the ivory trader Kurtz, which enables Conrad to create a parallel between London and Africa as places of darkness.

Where does the heart of darkness take place?
# ANSWER
To answer this question, we should know that: Heart of Darkness (1899) is a novella by Polish-English novelist Joseph Conrad, about a voyage up the Congo River into the Congo Free State, in the heart of Africa, by the story's narrator Charles Marlow.
FINAL ANSWER: the Congo River into the Congo Free State


# QUESTION
The British Royal Family faced a serious problem during the First World War because of its blood ties to the ruling family of Germany, Britain's prime adversary in the war. Before the war, the British royal family had been known as the House of Saxe-Coburg and Gotha. In 1910, George V became King on the death of his father, King Edward VII, and remained king throughout the war. He was the first cousin of the German Kaiser Wilhelm II, who came to symbolise all the horrors of the war. Queen Mary, although British like her mother, was the daughter of the Duke of Teck, a descendant of the German Royal House of Württemberg. During the war H.G. Wells wrote about Britain's "alien and uninspiring court", and George famously replied: "I may be uninspiring, but I'll be damned if I'm alien."

Who was the queen of britain during ww1?
# ANSWER

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The relevant information to answer the above question is: Queen Mary, although British like her mother, was the daughter of the Duke of Teck, a descendant of the German Royal House of Württemberg.
FINAL ANSWER: Queen Mary