Repositories of linguistic annotation terminology, such as GOLD (Farrar and Langendoen, 2003), ISOcat (Windhouwer and Wright, 2012) and its successor CCR, 3 make it possible to overcome the heterogeneity of annotation schemes by acting as an interlingua that allows mapping annotations from one scheme to another, thus addressing conceptual interoperability (Chiarcos, 2012a).
far from all corpora that we use today follow the principles mentioned above.