Question: The Jordanian jihadist who was also known as the "Shaykh of the slaughterers" was blamed for the deaths of how many during the 2004 Iraq churches attack in 2004?
Sentence (from "2004 Iraq churches attacks"): No one claimed responsibility for the attacks, but Iraq's national security adviser, Mowaffaq al-Rubaie, blamed the attacks on Abu Musab al-Zarqawi.
Relevant evidence: No