Question: When was the monument, worked on by Louis Laybourne Smith, in Adelaide, South Australia opened?

<P0-S0> First opened in 1977, the crescent-shaped Mount Lofty Botanic Garden is situated on 97 hectares on the eastern slopes of Mount Lofty in the Adelaide Hills east of Adelaide in South Australia. <P0-S1>  The cooler, wetter location suits plants from temperate climates which are difficult to grow on the Adelaide Plains. <P0-S2>  Amongst the native Australian flora there are tree ferns, as well as exotic cultivated plants from cool climates including Rhododendron and Magnolia and the National Species Rose Collection. <P0-S3>  The Mount Lofty Botanic Garden, together with the Adelaide and Wittunga Botanic Gardens, is administered by the Botanic Gardens of South Australia, a State Government statutory authority. <SEP> <P1-S0>  Opened in 1931, the memorial is located on the corner of North Terrace and Kintore Avenue, adjacent to the grounds of Government House. <P1-S1> The National War Memorial is a monument on the north edge of the city centre of Adelaide, South Australia, commemorating those who served in the First World War. <P1-S2>  Memorial services are held at the site throughout the year, with major services on both Anzac Day (25 April) and Remembrance Day (11 November). <SEP> <P2-S0>  He remained with the firm until his death in 1965, and over the years was involved in a number of significant projects, including the South Australian National War Memorial and the original Australian Mutual Provident building on King William Street. <P2-S1> Louis Laybourne Smith CMG (1 April 1880 – 13 September 1965) was an architect and educator in South Australia. <P2-S2>  Born in the Adelaide inner-southern suburb of Unley, he became interested in engineering and architecture while in the goldfields of Western Australia and later studied mechanical engineering at the School of Mines, serving an apprenticeship under architect Edward Davies. <P2-S3>  After graduating he accepted a position as a lecturer at the school, and was responsible for developing the first formal architecture course in the State in 1904. <P2-S4>  Between 1905 and 1914, he served as registrar at the school before leaving to join his long-time friend, Walter Bagot, at the architectural firm of Woods, Bagot and Jory. <SEP> <P3-S0> Brighton Town Hall, Hove, is located on Brighton Road, Hove, in the city of Adelaide in South Australia. <P3-S1>  The Brighton Town Hall was built in 1869 and was just the fourth Town Hall built in the colony of South Australia. <P3-S2>  The architect and builder was George William Highet who arrived in the colony in 1836. <P3-S3>  G. W. Highet served as a town clerk and Councillor and died in Brighton aged 80 years. <P3-S4>  The hall was constructed of stone from Ayliffe’s quarry in the Adelaide Hills laid on concrete foundations. <P3-S5>  The pioneers built it not just as a place for the business of Government but as a place "to serve the wants of the citizens" for many different activities. <P3-S6>  On 10 May 1869 a foundation stone was laid by the Hon John Hodgkiss a member of the Legislative Council of South Australia in a ceremony attended by many of South Australia's most important pioneers. <P3-S7>  Under this stone was placed a time capsule containing copies of the newspapers of the day.