 An important way of introducing abstract objects that has been discussed in the philosophical literature is that of abstraction from concepts (Frege 1884; Wright 1983; Hale 1987). A related view is that of pleonastic entities introduced by “something-from-nothing transformations” on the basis of nonreferential expressions (Schiffer 1996). Are these strategies part of the (constructional) ontology of natural language? On the Fregean view, abstraction is part of the semantics of functional number terms like the number of planets, which, on that view, introduce a number on the basis of a concept (the concept planet) and the relation of equinumerosity. The pleonastic account was originally applied to that-clauses and nominals like the property of being wise (Schiffer 1996). The method of introducing objects on the basis of nonreferential expressions has been argued to be associated with the compositional semantics of close appositions of the sort the number eight and the truth value true, as well as other “reifying terms” of the sort the property of being wise and the fact that S (Moltmann 2013: chap. 6). The use of the abstraction strategy may serve the purpose of enlarging the domain of the ontology of natural language by choice, if reifying terms are part of the “periphery”, not the “core” of language  (§4.1).  The introduction of entities by abstraction, though, also appears to underlie the Kimian notion of events, as opposed to the Davidsonian one of events as primitives (Kim 1976; Davidson 1967; Maienborn 2007).