Introduction: general and computational pragmatics Pragmatics is the branch of linguistics that studies the relations between linguistic phenomena and aspects of the context of language use. To understand these relations is of crucial importance in many areas of theoretical, computational, and applied linguistics. In theoretical linguistics, the analysis of such phenomena as anaphora, deixis, and tense requires taking properties into account of the context in which expressions exhibiting these phenomena can be used. Utterances which are context-dependent in such ways are called indexical. Bar-Hillel (1954) has argued that indexicality is pervasive in natural language, and speculated that more than 90% of all declarative utterances are indexical. Indexical expressions encode information about aspects of context: about objects introduced earlier in the discourse, about objects that form part of the physical and perceptual context, or about the (relative) time