In contrast to present people and things, absent people and things can be referred to by naming; for example, by instantiating a class "the house" (in a context where there is only one house) and presenting things in relation to the present, named and sui generis people or things can be "I'm going home", "I'm going to Miyazaki's place", "I'm going to the mayor's place", "I'm going to my mother's place" or "I'm going to my mother's friend's place". Functionally, deictic classifiers not only indicate that the referenced person or thing has a spatial position or an interactional role but also classify it to some extent. In addition, Japanese pronouns are restricted by a situation type (register): who is talking to whom about what and through which medium (spoken or written, staged or in private). In that sense, when a male is talking to his male friends, the pronoun set that is available to him is different from those available when a man of the same age talks to his wife and, vice versa, when a woman talks to her husband. These variations in pronoun availability are determined by the register.