A text usually provides more information than a random sequence of clauses: It combines sentence-level information to larger units which are glued together by coherence relations that may induce a hierarchical discourse structure. Since linguists have begun to investigate texts as more complex units of linguistic communication, it has been controversially discussed what the appropriate level of analysis of discourse structure ought to be and what the criteria to identify (minimal) discourse units are. Linguistic structure–and more precisely, the extraction and integration of syntactic,...