Question: What was officially initiated by Sherif Hussein bin Ali at Mecca on 10 June 1916, and was part of the Siege of Medina that occurred during World War I?
Sentence (from "McMahon–Hussein Correspondence"): The McMahon–Hussein Correspondence, or the Hussein–McMahon Correspondence, was a series of ten letters exchanged from July 1915 to March 1916, during World War I, between Hussein bin Ali, Sharif of Mecca, and Lieutenant Colonel Sir Henry McMahon, British High Commissioner to Egypt, concerning the political status of lands under the Ottoman Empire.
Relevant evidence: No