Question: What store was founded in 1861 in Philadelphia and had Keith Chapman as its principal organist?
Sentence (from "Keith Chapman (organist)"): Keith Chapman (1945-1989) was an American concert organist known best for his flair at playing in the symphonic style of organ performance, and particularly for his long and distinguished association (1966-1989) with the Wanamaker's Department Stores of Philadelphia as their principal organist of the Wanamaker Organ.
Relevant evidence: Yes