sentences:  For example, the Royal Botanic Garden, Sydney commissioned sculptor Chris Booth to design a living sculpture (entitled Wurrungwuri) for its grounds, officially unveiled 9 March 2011.One of the two main pieces of the sculpture is a 'sandstone wave', consisting of about 200 tonnes of sandstone blocks in an undulating form reminiscent of the tectonic forces that created the stone.The sculptor says the design is 'inspired by the sandstone stratas it emerges from and, of course, the link to the sea which it cascades towards ... its evolution is from the geomorphology.'