Question: What group was behind the attack that killed Amitzur Shapira?
Sentence (from "Amitzur Shapira"): Amitzur Shapira (Hebrew: עמיצור שפירא‎ ‎ ; July 9, 1932 – September 6, 1972) was an Israeli sprinter and long jumper in the 1950s and a coach for the Israeli track and field team at the 1972 Summer Olympics in Munich, Germany.
Relevant evidence: No