Question: Roald Amundsen disappeared during a rescue mission to the North Pole in search of an aviator born in which year ?
Context: Mount Bjaaland ( ) is a rock peak (2,675 m), the southeasternmost summit of the massif at the head of Amundsen Glacier, in the Queen Maud Mountains.  In November 1911, a number of mountain peaks in this general vicinity were observed and rudely positioned by the South Pole Party under Roald Amundsen.  Amundsen named one of them for Olav Bjaaland, a member of the party.  The peak described was mapped by United States Geological Survey (USGS) from surveys and U.S. Navy aerial photography, 1960-64.  For the sake of historical continuity and to commemorate the Norwegian exploration in this area, the Advisory Committee on Antarctic Names (US-ACAN) has selected this feature to be designated Mount Bjaaland.  Other peaks in the massif have been named for members of Amundsen's South Pole Party. The Société Latham was a French aeronautical construction company which built seaplanes for the French Navy.  It is best known for the prototype of the Latham 47 which disappeared in 1928 with Roald Amundsen onboard during a rescue mission to the North Pole in search of Umberto Nobile (a memorial to which was set up in Caudebec-en-Caux in 1931, by the sculptor Robert Delandre and the architect Léon Rey). Mount Wisting ( ) is a rock peak (2,580 m), the northwesternmost summit of the massif at the head of Amundsen Glacier in the Queen Maud Mountains.  In November 1911, a number of mountain peaks in this general vicinity were observed and rudely positioned by the South Pole Party under Roald Amundsen.  Amundsen named one of them for Oscar Wisting, a member of the party.  The peak described was mapped by United States Geological Survey (USGS) from surveys and U.S. Navy aerial photography, 1960-64.  For the sake of historical continuity and to commemorate the Norwegian exploration in this area, the Advisory Committee on Antarctic Names (US-ACAN) has selected this feature to be designated Mount Wisting.  Other peaks in the massif have been named for members of Amundsen's South Pole Party. Umberto Nobile (] ; 21 January 1885 – 30 July 1978) was an Italian aviator, aeronautical engineer and Arctic explorer.  Nobile was a developer and promoter of semi-rigid airships during the period between the two World Wars.  He is primarily remembered for designing and piloting the airship "Norge", which may have been the first aircraft to reach the North Pole, and which was indisputably the first to fly across the polar ice cap from Europe to America.  Nobile also designed and flew the "Italia," a second polar airship; this second expedition ended in a deadly crash and provoked an international rescue effort. Roald Amundsen's South Pole Journey (Norwegian: "Roald Amundsens sydpolsferd" ) is a Norwegian documentary film that features Roald Amundsen's original footage from his South Pole expedition from 1910 to 1912.  The film was seen for the first time in 1912 and it was used by Amundsen for his traveling lectures. Mount Hassel ( ) is a rock peak 2,390 m high, the northeasternmost summit of the massif at the head of Amundsen Glacier, in the Queen Maud Mountains of Antarctica.  In November 1911, a number of mountain peaks in this general vicinity were observed and rudely positioned by the South Pole Party under Roald Amundsen.  Amundsen named one of them for Sverre Hassel, a member of the party.  The peak described was mapped by the United States Geological Survey from surveys and U.S. Navy aerial photography, 1960–64.  For the sake of historical continuity and to commemorate the Norwegian exploration in this area, the Advisory Committee on Antarctic Names has selected this feature to be designated Mount Hassel.  Other peaks in the massif have also been named for members of Amundsen's South Pole Party. The Latham 47, or Latham R3B4 in Naval service was a French twin-engine flying boat designed and built by Société Latham & Cie for the French Navy.  The aircraft achieved notoriety in 1928 when aircraft number 47.02 disappeared with the explorer Roald Amundsen on a rescue mission for the Italian explorer Umberto Nobile. Roald Amundsen (often abbreviated Roald; named in honor of Norwegian polar explorer Roald Amundsen), originally named Vilm, is a German steel-ship built on the Elbe River in 1952.  Having worked in different areas, she was refitted in 1992 to 1993 as a brig (two-masted square-rigged sailing ship) and now serves as a sail training ship.  During summer, she usually operates in the Baltic Sea, and usually embarks for journeys to farther destinations for winter, including several trans-Atlantic crossings. The Milwaukee Rescue Mission (MRM) is a shelter for homeless and ailing families.  Since 1893, MRM has worked with the hungry and hurting of Milwaukee, helping them restore their lives and their hope.  In its Milwaukee home, any given night will see nearly 1,500 homeless people will be on the streets.  The Milwaukee Rescue Mission seeks to meet those in need where they are.  MRM offers practical assistance like food (approximately 300,000 meals this year), clothing (nearly 40,000 items), and shelter (over 100,000 nights).  In addition, the shelter offers transformative programs that equip struggling men, women, and children to get off the streets and turn their lives around for good.  While practical assistance is important, the Milwaukee Rescue Mission supplies both short- and long-term assistance, complemented by education, counseling, help in overcoming substance abuse, job training and much more.  The organization bases its programs on addressing the root causes of problems, rather than simple temporary fixes.  And as a non-denominational Christian organization, MRM provides spiritual development and enrichment, all based on the good news of the Gospel; it professes that the Gospel message is the key to lasting change.The Milwaukee Rescue Mission is part of the Association of Gospel Rescue Missions. Leif Dietrichson (1 September 189018 June 1928) was a Norwegian military officer and aviation pioneer.  He is most famous for joining Roald Amundsen and Lincoln Ellsworth in the 1925 North Pole Expedition.  In 1928, Dietrichson disappeared with Amundsen and four others as they were looking for the expedition of Umberto Nobile.
Answer: 1885