(By Dik Bakker): "This map gives a survey of the distribution of languages with person markers on their adpositions... In order to determine whether a language has person marking on its adpositions, we first need to establish whether it possesses the category adposition at all. In general, the major function of an adposition is to relate its object, i.e. the noun phrase with which it forms a constituent, to another nominal or a verbal constituent on the basis of a more or less specific semantic relationship, such as location, time, property, instrument or possession. Languages may use several strategies to fulfill this function, either lexical or morphological. In example (2) below, from Barbareño Chumash (California), we have a verbal construction fulfilling such a function. What is expressed by an adverb and an adposition in the English translation, across from, is rendered by a fully inflected verb in this language."