Question: Suzanna Catharina de Graaff's claim of being the fifth daughter of Tsar Nicholas II and Tsarina Alexandra, was accepted by one of several imposters who clamed to be who?
Sentence (from "Suzanna Catharina de Graaff"): Her claim was accepted by Anna Anderson, who claimed to be Grand Duchess Anastasia Nikolaevna of Russia, but by few others.
Relevant evidence: Yes