 However, the example of a portrait brings us to another objection to resemblance theories of depiction, which Goodman mentions in passing (1968: 25), and others have accorded greater weight (Hopkins 1998b; Abell 2009). For if resemblance is a relation, and if the relata of a relation must be existing particulars, then it appears that pictures that represent fictional individuals (Zeus, Pegasus), and genre pictures, which represent kinds of objects without representing any particular instances of them, cannot resemble what they represent. Hence, even if it is plausible that a resemblance theory can explain how a portrait represents a sitter, it cannot provide a general explanation of depiction.