Question:  Torrens Linear Park includes what public open space bordered by the Adelaide Festival Centre and North Terrace

Context paragraphs:
Adelaide Festival Centre: The Adelaide Festival Centre, Australia's first multi-purpose arts centre, was built in 1973 and opened three months before the Sydney Opera House.  The Festival Centre is located approximately 50 metres north of the corner of North Terrace and King William Street, lying near the banks of the River Torrens and adjacent to Elder Park.  It is distinguished by its three white geometric dome roofs and its plaza consisting of lego block-like structures to the south and lies on a 45-degree angle to the city's grid.  It is the home of South Australia's performing arts.  The Adelaide Festival Centre replaced the City Baths, which stood in this spot for many decades.

Deer Ridge Open Space: Deer Ridge Open Space is a 188-acre public-owned open-space area in the southwest portion of the town of Newbury Park, California.  It contains a series of north-facing mountainous ridges and canyons, dominated by chaparral and oak trees.  It shares borders with the Santa Monica Mountains National Recreation Area to the south, and the Los Robles Trail traverses the length of Deer Ridge Open Space.  Its main trailhead is located on Potrero Road, while a smaller access point is located at the southern end of Felton Street.  The Los Robles Trail is the Conejo Open Space Conservation Agency’s longest trail, and connects to open-space areas and parks such as the Los Padres Open Space, Conejo Ridge Open Space, Hope Nature Preserve, Old Conejo Open Space, and the Los Vientos Open Space.  The trail in Newbury Park provides panoramic views of the Conejo Valley and Santa Monica Mountains, before entering the Hope Nature Preserve.  The Los Robles Trail provides more than 25 miles of contiguous trails connecting Newbury Park to Westlake Village in Los Angeles County.  Immediately south of the Deer Ridge Open Space in Newbury Park are the Hidden Valley and Rancho Sierra Vista "Satwiwa".

Alta Vista Open Space: Alta Vista Open Space is a 43-acre open-space area in western Newbury Park, California, United States, adjacent to Dos Vientos Open Space and its 1,216 acres of natural open space area and numerous trails.  Its primary trail is the Ring Finger Trail, which is reached from its trailhead at the southern side of Calle Alta Vis, directly across the street from Calle Las Collinas.  Most of the open-space area is owned by the homeowners association, while eleven acres are owned by the Conejo Open Space Conservation Agency (COSCA).  Its flora contain large areas covered with chaparral and coastal sage scrub, while some endangered endemic species include Conejo Buckwheat, Verity's Dudleya, and Conejo Dudleya.  It functions as a crucial wildlife corridor into the Santa Monica Mountains National Recreation Area through Point Mugu State Park.  Some of the fauna here includes Mountain lions, coyotes, mule deer, bobcats, and more.  Adjacent to more than 16,000 acres of natural open-space areas, Alta Vista Open Space contains numerous internal and regional trail connections, connecting for instance to the Conejo Mountain, Potrero Ridge Open Space, Los Vientos Open Space, Boney Mountain, Satwiwa (Rancho Sierra Vista), Point Mugu State Park, the Conejo Hills, and the Santa Monica Mountains.

Potrero Ridge Open Space: The Potrero Ridge Open Space encompasses eastern parts of the Potrero Ridge in the southwestern portion of Newbury Park, CA and the Conejo Valley.  The open-space area contains a total of 203 acres, and is owned and operated by the Conejo Open Space Conservation Agency (COSCA).  It is adjacent to the Dos Vientos Open Space in the west, which provides further access to the Santa Monica Mountains National Recreation Area by Satwiwa, as well as the Alta Vista Open Space, Los Vientos Open Space, and Los Robles Trail which leads to Los Robles Open Space in Thousand Oaks, CA and further into Westlake Village.  Conejo Valley’s longest creek, the Conejo Creek (Arroyo Conejo) runs through the western parts of the Potrero Ridge Open Space.  Some of the fauna here includes mountain lions, bobcats, coyotes, mule deer, golden eagles, American black bears, and reptiles such as the Western pond turtle and freshwater fish species in the Arroyo Conejo.  There are more than ten trailheads to access the open-space area, and some of the flora includes oak woodlands, coastal sage scrub and chaparral.  It is home to a wide variety of rare or endangered plant species as well, including Verity's dudleya, Conejo Dudleya, and Conejo Buckwheat.

Elder Park: Elder Park is a public open space in the city of Adelaide, South Australia on the southern bank of the River Torrens and that is bordered by the Adelaide Festival Centre and North Terrace.

Torrens Linear Park: The Torrens Linear Park was completed in 1997 as the first of its kind developed in Australia where it is the largest hills-to-coast park.  It began as a flood mitigation scheme along the River Torrens running westward from the Adelaide Hills, through the Adelaide metropolitan area, to the sea.  Cyclists and walkers can use a trail that runs the 30 km length of the park, from Gorge Road, in Athelstone in the north-east, through the Northern Parklands of the City of Adelaide, to the river mouth at Henley Beach in the west.  In the Parklands section, the river runs past many notable landmarks including the Adelaide Zoo, the Adelaide Botanic Gardens, the Festival Theatre and Elder Park.

Hedgeley Dene Gardens: Hedgeley Dene Gardens is a public open space in the suburb of Malvern East in Melbourne, Australia.  It is one of the most popular parks in the Malvern East locality.  It is also significant as an example of public open space design that recreates the qualities of an informal, picturesque English garden or northern European landscape in an Australian suburb.  It forms part of a network of linear open spaces in Melbourne's eastern suburbs in the local government areas of the Stonnington and Boroondara, formed along drainage easements and watercourses such as Gardiners Creek.  However, Hedgeley Dene Gardens is unique due to its particular landscape character.

Ventu Park Open Space: Ventu Park Open Space is a 141-acre open space area in Newbury Park, California.  Its primary features are the Rosewood Trail leading to Angel Vista, a 1,603 ft peak in the Santa Monica Mountains.  Parking for the Rosewood Trail is located at the Stagecoach Inn Park, across Lynn Road from the primary trailhead.  The Rosewood Trail begins with oak woodland and crosses a creek at the canyon floor, before climbing up towards the steep Angel Vista Point.  There are 360-degree panoramic views of the Conejo Valley, the Oxnard Plain, the California Channel Islands, Pacific Ocean, Point Mugu, Hidden Valley, as well as the Santa Monica-, Santa Susana- and Topa Topa Mountains.  The Rosewood Trail is the starting point for the Los Robles Trail, the longest trail operated by the Conejo Open Space Conservation Agency (COSCA).  It connects to various open space areas and nature preserves in the Greater Thousand Oaks Area, including the Hope Nature Preserve, Los Padres Open Space, Conejo Ridge Open Space, Deer Ridge Open Space, Old Conejo Open Space and Los Vientos Open Space.  The 25-mile Los Robles Trail begins by Angel Vista Point and is a 25-mile trail connecting Newbury Park and the City of Westlake Village by crossing Hidden Valley, Thousand Oaks and Lake Sherwood.  Alternatively, hikers can cross the Potrero Ridge and join the trail leading to Satwiwa, which again connects to Point Mugu through trails crossing the Santa Monica Mountains through the Big Sycamore Canyon.  The trails here are used by equestrians, mountain bikers as well as hikers.  The Rosewood Trail is a 5-mile roundtrip hike from the Stagecoach Inn Park to the top of Angel Vista.

Joslin, South Australia: Joslin is a suburb of Adelaide in the City of Norwood Payneham St Peters.  It is rectangular, stretching from Payneham Road (southeast) to the River Torrens and Torrens Linear Park (northwest), but from Lambert Road on the northeast only about 350m along the numbered avenues towards the next cross street which is in St Peters.

Gilberton, South Australia: Gilberton is an inner northern suburb of Adelaide, South Australia on the northern bank of the River Torrens a short distance from Adelaide’s city centre.  It is bounded by the river, Park terrace, Stephen Terrace and Northcote Terrace.  The suburb is largely residential with some large and ornate Victorian homes and approximately 2 km of the Torrens Linear Park as its southern boundary.  The large homes in the suburb's northern section give it a historic character that is protected by Government planning regulations.

Supporting paragraphs: Torrens Linear Park Elder Park
Answer: Elder Park