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 "Abu Muhammad al-Maqdisi"): He is best known as the spiritual mentor of Jordanian jihadist Abu Musab al-Zarqawi, the initial leader of al-Qaeda in Iraq.
Relevant evidence: No