task is simply too difficult. Ich hätte es wissen müssen: Die Aufgabe ist einfach zu schwer. (Same as previous sentence, in German.) Cataphora of this sort is particularly common in formal contexts, using an anaphoric expression such as this or the following: This is what I believe: that all men were created equal. After squaring both sides, we arrive at the following: . See also References Figures of speech Pragmatics Semantics Formal semantics (natural language)