Struggling on a scenario question

Sarah and Catherine purchased chimney pots cottage, a premises which was perfect for their new business venture running a soft play area for babies and toddlers. They purchased the property as beneficial joint tenants.
Chimney pots cottage suited their requirements perfectly as when they looked around the property there was already a soft play area, complete with a ball pool, climbing area and slides an outdoor play area with trampolines and an industrial kitchen and cafe area. The solar panels were also an attractive feature and the couple hoped that they would keep energy costs down. It was believed that the famous historical playwright william wilde had lived in chimney pots cottage and that he had written one of his most famous plays Leeds-side story whilst staying at the property.
The antique desk and chair that he was believed to have used were in the reception area of the premises and attracted many visitors to the chimney pots cottage. Also a weeping willow tree marking the spot where william wildes ashes had been scattered had been planted in his memory and was a main feature of the garden. When Sarah and Catherine visited the property, following their completion of the purchase, they were dismayed to find that the property was not as they expected. The antique desk and chair had been removed, the solar panels had disappeared causing damage to the roof and the tree had been uprooted. The kitchen was empty, all the worktops, cupboards and appliances having been removed. The soft play area equipment was still there but the balls had been removed from the ball pool and the sand had been removed from the sandpit.

Critically analyse and apply the law relating to the definition of land to the above scenario and consider whether the above items should have remained at the property.