Complex sentence: Lüpertz was awarded another professorship at the Staatlichen Kunstakademie Düsseldorf in 1986, where he was appointed dean in 1988.
Split into simpler sentences: Lüpertz was awarded another professorship, this time at the Staatlichen Kunstakademie Düsseldorf, in 1986. He was eventually appointed dean of the Staatlichen Kunstakademie in 1988.