Shelter Mutual Insurance Co. brought a declaratory judgment action against Tommy and Bessie Maples (referred to collectively as "Maples") in the United States District Court for the Western District of Arkansas. Shelter asked the court to declare that Shelter had no obligation to pay a claim made by Maples under a homeowner's insurance policy issued by Shelter. The facts set forth in the following paragraph were as stipulated (i.e., as agreed to) by the parties. While residing in Saudi Arabia, Maples contracted for the construction of a single-family retirement home in Arkansas. Maples purchased homeowner's insurance from Shelter, whose policy, issued in November 2000, was in full effect at all times relevant to the case. The two-story residence, which had a wooden frame and a basement made of concrete, was largely complete as of November 2000. Maples, who remained in Saudi Arabia, took reasonable precautions for winter weather by leaving a key with the contractor and asking him to winterize the residence. At some unknown time, a water pipe froze and burst. As a result, between four to six inches of water stood continuously in the basement until the contractor discovered the problem in April 2001. The standing water caused only minimal structural damage to the basement, but the humidity from the standing water caused mold to form on all of the interior surfaces of the residence. As a result of the mold, the residence became uninhabitable and had to be demolished. Maples reported the loss to Shelter, which instituted the declaratory judgment action referred to above. After the federal district court granted summary judgment in favor of Shelter, Maples appealed to the United States Court of Appeals for the Eighth Circuit.

Should the District Court's grant of summary judgment in favor of Shelter be reversed? Explain.