Question: Seiko Holdings Corporation was formerly known as which watch and jewlery shop?
Sentence (from "Wako (retailer)"): Wako Co., Ltd. (株式会社和光 , Kabushiki-gaisha Wakō ) is a department store retailer in Japan, whose best known store (commonly known as the Ginza Wako) is at the heart of the Ginza shopping district in Tokyo.
Relevant evidence: No