<prompt> Yaklanywa nguRobert Youngman, lo mthombo wawuyisipho esivela ekilasini lika-1939.  <response>: Yiqiniso, inguqulo eyinkimbinkimbi yomusho ithi Kwakhiwe nguRobert Youngman, umthombo wawuyisipho esivela ekilasini lika-1939 futhi ngenxa yabaxhasi bawo, umthombo uvame ukubizwa ngokuthi yi-Class of 39 Water Sculpture. 