 There is still something missing. How can the impact of the reference of the nominal predicates on the aspectual class be derived formally? We will present only the basic idea of Krifka's construction here. Let \(w\) be the predicate corresponding to wine and let \(e\) be the event predicate representing drink wine. The basic idea is that an object is changed by the influence of  such an event in a gradual manner. Since we know that \(w\) is cumulative this predicate also applies to proper parts of \(w\), say \(w'\). Then given that drink  wine can be applied to \(e\) it should also be possible to apply it to a proper part of \(e\), say \(e'\). Quantized predicates show a different behaviour. Since a bottle of wine is quantized no proper part of it  is a bottle of wine  and therefore no proper part of \(e\) can be described as drink a bottle of wine. To account for this intuitive explanation in formal terms it is necessary to specify certain preservation properties for thematic roles since these roles relate the algebraic structure of events and the algebraic structure of objects. This means that notions like summativity, uniqueness of objects etc. have to be defined for relations between events and objects; i.e. thematic roles.