original: It was discovered in 1907 by August Kopff.
simplifications: August Kopff found it in 1907. It was found in 1907 by August Kopff. August Kopff discovered it in 1907. August Kopff founded it in 1907. It was discovered in 1907 by August Kopff. It was found in 1907 by August Kopff. August Kopff discovered it in 1907. August Kopff discovered it in 1907. August Kopff discovered it in 1907. It was come across by August Kopff in 1907.