Triple

Target class: simply connected surface
Context triple: [Riemann sphere, instanceOf, simply connected surface]

• A. closed surface
  A closed surface is a continuous two-dimensional manifold in three-dimensional space that is finite in extent and has no boundary, completely enclosing a volume.
• B. topology
  Topology is the mathematical study of properties of spaces that are preserved under continuous deformations such as stretching or bending, but not tearing or gluing.
• C. nonsingular curve
  A nonsingular curve is an algebraic curve with no singular points, meaning it is smooth everywhere and has a well-defined tangent line at every point.
• D. non-topological soliton
  A non-topological soliton is a stable, localized field configuration whose stability arises from conserved charges or dynamical effects rather than from the topology of the underlying field space.
• E. four-dimensional manifold
  A four-dimensional manifold is a topological space that locally resembles four-dimensional Euclidean space, meaning each point has a neighborhood homeomorphic to an open subset of ℝ⁴.
• F. None of above. chosen