 In the following, we will analyze the imperfective paradox as an instance of the frame problem (cf. Stenning and van Lambalgen 2005; van Lambalgen and Hamm 2005; Stenning and van Lambalgen 2008; Baggio and van Lambalgen 2007; Baggio et al. 2008). Both activities and accomplishments involve continuous change and we therefore have to add additional predicates and axioms to properly deal with gradually changing objects which are under the influence of an external force. Table 5 introduces two new predicates; axioms A1–A5 provide a general theory of instantaneous and continuous change (from van Lambalgen and Hamm 2005: 40). As can be easily seen, the axiom system extends that of Shanahan (1997). 