Question: When did Chaya Mushka Schneerson's father die?
Sentence (from "Yosef Yitzchak Schneersohn"): He is also known as the Frierdiker Rebbe (Yiddish for "Previous Rebbe"), the Rebbe RaYYaTz, or the Rebbe Rayatz (an acronym for Rabbi Yosef Yitzchak).
Relevant evidence: No