“…In Castilian Spanish, the language used here, animacy is among the most important features that controls object marking (e.g., Garcia Garcia, 2007; see also Leonetti, 2004): the differential object marker, the prepositional accusative (or, personal) 'a', is required for definite and specific direct objects when the object is animate but ungrammatical for inanimate objects (e.g., ''Natxo escuchó a Agata/ Ã a la canción'': Natxo listened to Agata/the song). Differential object marking has been explained in terms of prominence/markedness (e.g., Aissen, 2003;but see García García, 2007): because animate objects are less prototypical, and therefore more prominent direct objects, they are linguistically marked and receive case-marking, whereas economy dictates that case-marking should be omitted in other situations (see also Primus, 2011). Object marking thus makes thematic interpretation proceed more smoothly in face of atypical, agentive objects.…”