Question: The "black spider" memos are letters and memos, to British government ministers and politicians over the years, written by Charles, Prince of Wales, the eldest child and heir apparent of who?
Sentence (from "Charles, Prince of Wales"): He is also the oldest person to be next in line to the throne since Sophia of Hanover (the heir presumptive to Queen Anne), who died in 1714 at the age of 83.
Relevant evidence: No