Question: The Fall of Zinjibar and Jaar occurred during the unrest in Yemen that began in what year?

<P0-S0> The Yemeni Civil War is an ongoing conflict that began in 2015 between two factions claiming to constitute the Yemeni government, along with their supporters and allies. <P0-S1>  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. <P0-S2>  Al-Qaeda in the Arabian Peninsula (AQAP) and the Islamic State of Iraq and the Levant have also carried out attacks, with AQAP controlling swathes of territory in the hinterlands, and along stretches of the coast. <SEP> <P1-S0> In early December 2015, two Yemeni towns, Zinjibar (the provincial capital of Abyan Governorate) and Ja'ar (a town a few km inland to the north), were captured by the jihadist group Al-Qaeda in the Arabian Peninsula (AQAP). <P1-S1>  Zinjibar was retaken by pro-government forces 14 August 2016. <P1-S2>  This was the second capture and occupation of Zinjibar during unrest in Yemen. <P1-S3>  The town was earlier taken by AQAP’s in May 2011 and held until the summer of 2012. <SEP> <P2-S0> The 2000s commodities boom or the "commodities super cycle" was the rise, and fall, of many physical commodity prices (such as those of food stuffs, oil, metals, chemicals, fuels and the like) which occurred during the first two decades of the 2000s (2000–2014), following the Great Commodities Depression of the 1980s and 1990s. <P2-S1>  The boom was largely due to the rising demand from emerging markets such as the BRIC countries, particularly China during the period from 1992 to 2013, as well as the result of concerns over long-term supply availability. <P2-S2>  There was a sharp down-turn in prices during 2008 and early 2009 as a result of the credit crunch and sovereign debt crisis, but prices began to rise as demand recovered from late 2009 to mid-2010. <P2-S3>  Oil began to slip downwards after mid-2010, but peaked at $101.80 on 30 and 31 January 2011, as the Egyptian political crisis and rioting broke out, leading to concerns over both the safe use of the Suez Canal and overall security in Arabia itself. <P2-S4>  On 3 March, Libya's National Oil Corp said that output had halved due to the departure of foreign workers. <P2-S5>  As this happened, Brent Crude surged to a new high of above $116.00 a barrel as supply disruptions and potential for more unrest in the Middle East and North Africa continued to worry investors. <P2-S6>  Thus the price of oil kept rising into the 2010s. <P2-S7>  The commodities super-cycle peaked in 2011, "driven by a combination of strong demand from emerging nations and low supply growth." <P2-S8>  Prior to 2002, only 5 to 10 per cent of trading in the commodities market was attributable to investors. <P2-S9>  Since 2002 "30 per cent of trading is attributable to investors in the commodities market" which "has caused higher price volatility." <SEP> <P3-S0> Jaar (Arabic: جعار "Jaʿār") is a small town and capital of Khanfir District in south-western Yemen. <P3-S1>  One of the largest settlements in the Abyan Governorate, it is located in the south of the Abyan Governorate to the north of Al Kawd and the regional capital of Zinjibar. <P3-S2>  The town is located about 2 kilometres east of the right bank of the Wadi Bana.