Complex sentence: The work was on loan to the Art Gallery of New South Wales until 1996 when his widow Joyce sold the artwork to television executive Reg Grundy and Joy Chambers-Grundy, who retained ownership until at least 2014.
Split into simpler sentences: The work was on loan to the Art Gallery of New South Wales until 1996 when his widow Joyce sold the artwork. It was purchased by television executive Reg Grundy and Joy Chambers-Grundy, who retained ownership until at least 2014.