Kernrechtsfrage
Whether the start and entry fees for races abroad were a delivery (lease of a race track) or a taxable service.
Extrahierter Entscheid
The overall performance was economically a single service package, not a delivery; any rental element was unproven and at most subordinate.
Extrahierte Begründung
The association organized training and races, provided track use, timing, safety, organization, supervision, and facilities. Under the unity-of-supply principle, the economic core of the package governs. Here the core was participation in a racing event through organizational and related services.