Question: The military self-defense system developed for the IDF was derived from the street-fighting experience of a Hungarian-Israeli who was known as what?
Sentence (from "Imi Lichtenfeld"): Emrich "Imi" Lichtenfeld (May 26, 1910 – January 9, 1998) was a Hungarian-born Israeli martial artist who founded the Krav Maga self-defense system.
Relevant evidence: No