Question: Which long-time mistress of King Charles II of England occupied a townhouse in Pall Mall, London?
Sentence (from "Nell Gwyn"): Called "pretty, witty Nell" by Samuel Pepys, she has been regarded as a living embodiment of the spirit of Restoration England and has come to be considered a folk heroine, with a story echoing the rags-to-royalty tale of Cinderella.
Relevant evidence: No