Question: What is the name of the national movement of the Jewish people did Samuel Gruber "aka" Mieczyslaw Gruber belong to?
Sentence (from "Mieczyslaw Gruber"): Samuel Gruber "aka" Mieczyslaw Gruber (January 3, 1913 – June 17, 2006) was born in Podhajce, Poland (now Pidhaitsi, Ukraine).
Relevant evidence: No