Triple

Target entity: Lewis and Clark Expedition
Context triple: [Toussaint Charbonneau, employer, Lewis and Clark Expedition]

• A. Lewis and Clark Expedition chosen
  The Lewis and Clark Expedition was an early 19th-century American exploratory journey that mapped and studied the newly acquired western territories, establishing routes and relations that greatly expanded U.S. geographic and scientific knowledge.
• B. Lewis & Clark Pioneers
  The Lewis & Clark Pioneers are the intercollegiate athletic teams representing Lewis & Clark College in NCAA Division III competition.
• C. Washburn–Langford–Doane Expedition
  The Washburn–Langford–Doane Expedition was an 1870 exploratory survey of the Yellowstone region whose reports helped lead to the creation of Yellowstone National Park.
• D. Pike expedition to the headwaters of the Mississippi River
  The Pike expedition to the headwaters of the Mississippi River was an early 19th-century U.S. exploratory mission led by Zebulon Pike to locate the river’s source and assess the northern Louisiana Purchase region.
• E. Custer Expedition of 1874
  The Custer Expedition of 1874 was a U.S. Army reconnaissance mission led by Lt. Col. George Armstrong Custer into the Black Hills that publicized the region’s gold deposits and helped trigger the Black Hills Gold Rush.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.