Question: Did Geraldine Walther and Bianca Rech have the same nationality?
Sentence (from "Geraldine Walther"): She has collaborated with such artists as Isaac Stern, Pinchas Zukerman, and Jaime Laredo, and appeared as a guest artist with the Vermeer, Guarneri, Lindsay, Cypress, Tokyo and St. Lawrence quartets.
Relevant evidence: No