Complex sentence: In season 4 of the TV series, Tywin Lannister told his daughter that the gold mines under Casterly Rock ran dry over three years ago, a fact yet to be confirmed in the novels.
Split into simpler sentences: In season 4 of the TV series, Tywin Lannister has told his daughter that the gold mines under Casterly Rock ran dry over three years ago. A fact yet to be confirmed in the novels.