Text: This approach is a generalization of planar interpolation that is technically referred to as enhanced Voronoi Neighbor Averaging (EVNA) spatial interpolation (See Abt Associates (2000) for a more detailed description).
Entailment: Enhanced Voronoi Neighbor Averaging spatial interpolation is a method of planar interpolation.
Contradiction: There is only one type of spatial interpolation and it has never been named.