Triple

Target entity: Frederick Law Olmsted
Context triple: [Central Park water system, architect, Frederick Law Olmsted]

• A. Frederick Law Olmsted chosen
  Frederick Law Olmsted was a pioneering 19th-century American landscape architect best known for designing major urban parks such as New York City's Central Park and Boston's Emerald Necklace.
• B. Frederick Law Olmsted Jr.
  Frederick Law Olmsted Jr. was a prominent American landscape architect and urban planner known for advancing his father's legacy through major park, conservation, and planning projects in the early 20th century.
• C. Calvert Vaux
  Calvert Vaux was a 19th-century British-American architect and landscape designer best known for co-designing New York City's Central Park and contributing to many of its major public buildings and spaces.
• D. David Olmsted
  David Olmsted was a 19th-century American politician and early Minnesota settler who served as the first mayor of St. Paul and played a key role in the region’s early development.
• E. John Charles Olmsted
  John Charles Olmsted was a prominent American landscape architect of the late 19th and early 20th centuries, known for helping shape major urban parks and park systems across the United States.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.