Question: When did the shopping center that's a part of Linacre open?

Context paragraphs:
Seven Corners Shopping Center: Seven Corners Shopping Center was the first major shopping center to open in suburban Washington, D.C..  It is located in Seven Corners, Fairfax County, Virginia.  At its opening in 1956, it was the largest regional shopping center in Virginia.  The backsplit two-story mall structure was razed in the mid-1990s and replaced with a dual ground level power center.

Linacre (ward): Linacre is a Metropolitan Borough of Sefton ward in the Bootle Parliamentary constituency that covers the area of the town of Bootle historically known as Linacre and which contains Bootle centre, the New Strand Shopping Centre, and Gladstone Dock.  The ward population taken at the 2011 census was 12,305.

The Oaks (Thousand Oaks, California): The Oaks Shopping Center is a two-level indoor/outdoor, super-regional shopping mall located in Thousand Oaks, California.  It is owned and managed by Macerich.  Accessible from the US Highway 101 Ventura Freeway midway between downtown Los Angeles and Santa Barbara, it is one of two malls in its area (competing with the Simi Valley Town Center) and the largest shopping center in Ventura County.  The 1300000 sqft mall was originally built in 1978 and was renovated in 1993.  Starting in February 2007, the center has undergone an extensive upgrade including interior finishes, restrooms, entrance canopies and skylights to reflect a modern Spanish and Santa Barbara-influenced design.  The expansion includes a demolition of the then-vacated Broadway building and a Muvico 14-screen stadium seat theater and Bogarts, a full-service restaurant, built in its place.  Additional features include a 10-unit Spanish Dining Hall and amenities like family restrooms with granite, stacked flagstone and limestone tile.  Centered on the theatre are four sit-down restaurants: Lazy Dog Cafe and Red Robin, which are both connected to a 112330 sqft retail expansion in an outdoor environment, while Olive Garden and Red Lobster are located across the parking lot.  The Cheesecake Factory is located inside the Shopping Center with patio dining available.

Del Monte Center: Del Monte Center is an open-air shopping center located in Monterey, California.  Del Monte Center is the largest shopping center on the Monterey Peninsula and the second largest shopping mall in Monterey County, California, and has the only department store in a 22-mile radius.  Del Monte Center was designed by architect John Carl Wernecke, built by Williams and Burrows Construction Company and originally opened in 1967 but expanded and renovated in 1987.  The shopping center encompasses 675000 sqft of retail space including 85 stores, one department store (Macy's), Whole Foods Market, restaurants (California Pizza Kitchen, P.F. Chang's China Bistro, Pizza My Heart, Islands Fine Burgers & Drinks, Subway, Chipotle Mexican Grill, Starbucks and Lalla Grill), a gym and spa (Energia) and a thirteen screen Century Theatres.  Petco was added in 2004, replacing Stroud's.  The existing theater complex moved in 2006, with the former complex becoming a furniture store for Macy's.

Bay Plaza Shopping Center: Bay Plaza Shopping Center is a shopping center on the south side of Co-op City, in the Bronx, New York.  In addition to various department stores and shops, such as Macy's, JCPenney, Staples, Kmart and Old Navy, it has a multiplex movie theater, several restaurants, a fitness club, and some office space.  It used to operate a Barnes and Nobles bookstore across the mall but was shut down.  Constructed from 1987 to 1988 by Prestige Properties, the shopping center is located between Bartow and Baychester Avenues, just outside Sections 4 and 5 of Co-op City, on an open lot that from 1960 to 1964, was the site of Freedomland USA.  The Bay Plaza Shopping Center is the largest shopping center in New York City.  Since opening over 25 years ago, it has become extremely successful, the center claims to hold some of the highest performing stores on a per-square-foot basis for many national retailers.

Pavilion in the Park: Pavilion in the Park is an upscale shopping center in the northern part of Little Rock, Arkansas, along western Cantrell Road.  Built in 1985 in the style of a European enclosed shopping area, the shopping center is notable as much for its upscale content as for many such retailers being locally owned and operated.  Some tenants carry a long legacy in the city, such as Bauman's Men's Store, which opened downtown in 1919, and Trio's Restaurant, which has menu influences from the former Sam Peck Hotel, another one-time downtown fixture.  Despite such high reputations, the shopping center itself has had only limited success, with occupancy reaching 75% by 1991.

New Strand Shopping Centre: The New Strand Shopping Centre, known locally simply as The Strand, is the main shopping centre in Bootle, Merseyside, England.  Opened in 1968, it was part of a larger Bootle redevelopment during this period, which was also complemented by the establishment of the Girobank headquarters in nearby Netherton.

Asematunneli: Asematunneli (Swedish: "Stationstunneln" ) is an underground shopping center connecting the Helsinki Central railway station and City-Center in downtown Helsinki, Finland.  The area also has a ticket sales area for the Rautatientori metro station and connections to the nearby Forum shopping mall as well as Stockmann and Sokos department stores.  The shops and supermarkets in Asematunneli are licensed to stay open longer than normal as well as during the national holidays, making the shopping center an important location for last minute and emergency shopping for the people of the greater Helsinki area.  Kamppi Center and the bottom floor of Sähkötalo across Fredrikinkatu can also be accessed via underground tunnels by going through the Forum shopping mall first.  The interconnecting areas provide for convenient movement across a wide area of central Helsinki, and allow pedestrians to escape the rain, snow, and cold weather that dominate much of the Finnish calendar.

Stanford Shopping Center: Stanford Shopping Center is an upscale open air shopping mall located on Route 82 (El Camino Real) at Sand Hill Road in Palo Alto, California.  It is on the campus of Stanford University although the university only owns the land and not the actual buildings or stores.  Also, unlike the rest of the campus, the shopping center and the neighboring Stanford University Medical Center are part of the city of Palo Alto, not the census-designated place (CDP) of Stanford, California.  The shopping center buildings are owned by Simon Property Group, which manages the property and leases the land from the university.

Bulgaria Mall: Bulgaria Mall was officially opened on 1 December 2012 and is the first shopping center in Sofia and Bulgaria which will be positioned as an upper scale mall, focusing on the proper combination of medium to premium international brands with the highest quality Bulgarian retailers.  Owners of Bulgaria mall are Myles Summerfield and Nikola Yanakiev.  More specifically, the shopping center is positioned at the intersection of two of the most significant Sofia's boulevards – Bulgaria boulevard and Todor Kableshkov boulevard.  Bulgaria Mall has an exceptional location, close to the downtown (less than a 10 min.  drive), the Ring Road (app.  2 min.  drive) and some of the most affluent residential quarters of Sofia.  The mall will be developed as part of a mixed-use retail and office project with approximately 130,000 m² of total built-up area (33,000 m² for the commercial area).  The shopping center will include four underground (parking and a hypermarket of approx. 5,600 m²) and four above ground levels with retail and entertainment.  The parking will provide more than 1,100 lots with very convenient entrances to each underground parking deck.  The office part, which will consist of an office high-rise tower and an office building, will exceed 25,000 m² of lettable area.

Supporting paragraphs: Linacre (ward) New Strand Shopping Centre
Answer: 1968