Question: The Fall of Zinjibar and Jaar occurred during the unrest in Yemen that began in what year?
Sentence (from "Yemeni Civil War (2015–present)"): Houthi forces controlling the capital Sana'a and allied with forces loyal to the former president Ali Abdullah Saleh have clashed with forces loyal to the government of Abdrabbuh Mansur Hadi, based in Aden.
Relevant evidence: No