Generate a more complex version of this sentence The 11th Duke's widow, the Dowager Duchess of Devonshire, died on 24th September 2014.
Mesthi wae, versi sing luwih rumit saka ukara kasebut yaiku "Randa Adipati kaping 11, Duchess Dowager Devonshire, aktif banget kanggo promosi properti lan nambah penghasilan pengunjung. "