  A variant of the trope conception construes events as trope sequences (Campbell 1981). However, since tropes are particulars, a sequence of tropes at a place may itself be viewed as a trope, hence this variant is best regarded as a specification of what sort of tropes events are. Similar remarks apply to those theories that construe events as relational tropes (Mertz 1996), or even as higher-order tropes (Moltmann 2013). 