Question: Who manages both Northshore Mall in Peabody, Massachusetts and the Liberty Tree Mall in Danvers which are less than one mile from each other?

Context paragraphs:
Green Tree Mall: Green Tree Mall is a shopping mall located in Clarksville, Indiana.  The mall is located off of I-65 about four miles (6 km) north of downtown Louisville.  It has a total area of 795382 sqft .  It was named for a large boundary tree of considerable age that once stood at the location.  Currently, there are more than 80 inline stores and 3 major anchor stores (Dillard's, JCPenney, Sears, the latter which is closing in October 2017).  The mall is managed by CBL & Associates Properties, who bought it from Macerich in 2013.

Liberty Tree Mall: The Liberty Tree Mall is a shopping mall in Danvers, Massachusetts, U.S. that is one-third owned by the Simon Property Group.  The Simon Property Group owns the common area of the mall between Kohl's and Best Buy, but manages the entire property; while the right-hand area of the property from Best Buy to Staples is owned by Target, and the property from Kohl's to Dick's Sporting Goods is owned by New England Development, the mall's original developer.

Northshore Mall: The Northshore Mall is a shopping mall in Peabody, Massachusetts, located on Route 114.  The mall is currently anchored by Nordstrom, Sears, J. C. Penney, and two Macy's locations.  The mall is approximately 1.685 million ft² in size, and most of this space is located on one level, with the exception of the Nordstrom wing and most anchor stores.  The former Jordan Marsh store was four stories, until it was demolished to make way for the Nordstrom store.  The mall is currently managed by Simon Property Group, and is less than a mile away from Simon's Liberty Tree Mall.

Danvers, Massachusetts: Danvers is a town (and census-designated place) in Essex County, Massachusetts, United States, located on the Danvers River near the northeastern coast of Massachusetts.  Originally known as Salem Village, the town is most widely known for its association with the 1692 Salem witch trials.  It is also known for the Danvers State Hospital (one of the state's 19th-century psychiatric hospitals, which was located here) and for Liberty Tree Mall.  As of the 2010 census, the town's population was 26,493.

Liberty Tree District: The Liberty Tree District is a historic district encompassing a collection of six mid-scale commercial buildings between the Downtown Crossing area and the Theater District of Boston, Massachusetts.  They are clustered around the corner of Washington and Essex Streets, on the edge of the area known in the 20th century has Boston's Combat Zone, or adult entertainment district.  The area is historically significant as the site in the 1760s of the Liberty Tree and the Liberty Tree Tavern, a focal point of colonial discontent against British rule.  This significance is reflected in a carved relief on the Liberty Tree Block, a brick commercial block built in 1850 at the corner of Washington and Essex.  The building was designated as a Boston Landmark by the Boston Landmarks Commission in 1985.

North Shore Square: North Shore Square is a 621192 sqft shopping mall in Slidell, Louisiana.  The mall is the largest mall on the Northshore of Lake Pontchartrain, fifth largest in the New Orleans area and the 11th largest in Louisiana.  The mall is home to two anchor stores, Dillard's, and At Home, as well as approximately 23 other stores.  All the anchor stores are on one level.  The mall did not flood during Hurricane Katrina and experienced no serious damage.  The mall formerly had Mervyns as an anchor store, but closed shortly after the storm when Mervyn's pulled out of the Louisiana market.  The store was eventually replaced by Burlington Coat Factory, which is now closed due to corporate downsizing.  JCPenney closed on July 31, 2017.  The mall has struggled partially due to increased internet-based sales as well as an open-air shopping center located on the opposite side of town, to which it lost some of its tenants.  Following a nationwide trend, the mall's future is uncertain as many former mall-based stores have either closed completely or downsized nationally, and enclosed shopping malls across the country are challenged by new consumer trends and shifting paradigms.

Yuba Sutter Mall: The Yuba Sutter Mall (formerly called The Mall at Yuba City) is a single-level shopping mall located in Yuba City, California, opening on March 7, 1990.  The name of the mall changed on June 24, 2005 after a mild renovation and it serves as the regional mall for the Yuba-Sutter area.  The mall moved from Yuba County to the current Sutter County location after the Peach Tree Mall suffered damage from the .  The Yuba Sutter Mall serves as the only mall within the Yuba City Metropolitan Statistical Area.

Christown Spectrum Mall: Chris-Town Mall is the oldest operating mall and was the third shopping mall built in Phoenix, Arizona, located on Bethany Home Road and 19th Avenue.  The property currently is known as Christown Spectrum Mall, derived from Chris-Town Mall and Phoenix Spectrum Mall, names previously used in the past.  Today it exists as an enclosed shopping mall, although the enclosed portion of the mall was greatly reduced when redevelopment changed the configuration closer to a power centre.  The Christown Spectrum Mall's anchor stores are JCPenney, Costco, SuperTarget, Walmart Supercenter, Big 5 Sporting Goods, Dollar Tree, PetSmart and Ross Dress for Less.  When the JCPenney was added back to the mall, access to PetSmart, Target, Dollar Tree and Ross Dress for Less was cut off from inside, making only JCPenney, Costco, Big 5 Sporting Goods, and Walmart accessible from the inside.  Christown Spectrum Mall also has a Walgreens and a Harkins Theatres 14 as out-parcel anchors.

Liberty Tree: The Liberty Tree (1646–1775) was a famous elm tree that stood in Boston near Boston Common, in the years before the American Revolution.  In 1765, colonists in Boston staged the first act of defiance against the British government at the tree.  The tree became a rallying point for the growing resistance to the rule of Britain over the American colonies, and the ground surrounding it became known as Liberty Hall.  The Liberty Tree was felled by British troops and Loyalists in 1775.

George Peabody House Museum: The George Peabody House Museum is a historic house museum at 205 Washington Street in Peabody, Massachusetts.  It is dedicated to the life and deeds of 19th century U.S. entrepreneur, philanthropist, and namesake of the city, George Peabody.  The museum shares its location with the Peabody Leather Museum.  Within its walls, in 1795, George Peabody was born in what was then called South Danvers.

Supporting paragraphs: Northshore Mall Liberty Tree Mall
Answer: Simon Property Group