Given the task definition, example input & output, solve the new input case.
In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
Example: Passage: Nearing London, Oliver encounters Jack Dawkins, a pickpocket more commonly known by the nickname the "Artful Dodger", and his sidekick, a boy of a humorous nature named Charley Bates, but Oliver's innocent and trusting nature fails to see any dishonesty in their actions. The Dodger provides Oliver with a free meal and tells him of a gentleman in London who will "give him lodgings for nothing, and never ask for change". Grateful for the unexpected assistance, Oliver follows the Dodger to the "old gentleman's" residence. In this way Oliver unwittingly falls in with an infamous Jewish criminal known as Fagin, the gentleman of whom the Artful Dodger spoke. Ensnared, Oliver lives with Fagin and his gang of juvenile pickpockets in their lair at Saffron Hill for some time, unaware of their criminal occupations. He believes they make wallets and handkerchiefs.
Output: Who believes Fagin's gang make wallets and handkerchiefs?.
This question is based on the following sentence in the passage "He believes they make wallets and handkerchiefs". It evaluates the understanding that the pronoun "he" refers to name "Oliver". You can ask questions like this one about most pronouns in a paragraph.

New input case for you: Passage: Chartwell is a country house near the town of Westerham, Kent in South East England. For over forty years it was the home of Winston Churchill. He bought the property in September 1922 and lived there until shortly before his death in January 1965. In the 1930s, when Churchill was excluded from political office, Chartwell became the centre of his world. At his dining table, he gathered those who could assist his campaign against German re-armament and the British government's response of appeasement; in his study, he composed speeches and wrote books; in his garden, he built walls, constructed lakes and painted. During the Second World War Chartwell was largely unused, the Churchills returning after he lost the 1945 election. In 1953, when again Prime Minister, the house became Churchill's refuge when he suffered a devastating stroke. In October 1964, he left for the last time, dying at his London home, 28, Hyde Park Gate, on 24 January 1965.
The origins of the estate reach back to the 14th century; in 1382 the property, then called Well-street, was sold by William-at-Well. It passed through various owners and in 1836 was auctioned, as a substantial, brick-built manor. In 1848, it was purchased by John Campbell Colquhoun, whose grandson sold it to Churchill. The Campbell Colquhouns greatly enlarged the house and the advertisement for its sale at the time of Churchill's purchase described it as an "imposing" mansion. Between 1922 and 1924, it was largely rebuilt and extended by the society architect Philip Tilden. From the garden front, the house has extensive views over the Weald of Kent, "the most beautiful and charming" Churchill had ever seen, and the determining factor in his decision to buy the house.
In 1946, when financial constraints forced Churchill to again consider selling Chartwell, it was acquired by the National Trust with funds raised by a consortium of Churchill's friends led by Lord Camrose, on condition that the Churchills retain a life-tenancy. After Churchill's death, Lady Churchill surrendered her lease on the house and it was opened to the public by the Trust in 1966. A Grade I listed building, for its historical significance rather than its architectural merit, Chartwell has become among the Trust's most popular properties; some 232,000 people visited the house in 2016, the fiftieth anniversary of its opening.
Output:
What was the last month Winston Churchill lived at Chartwell?