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

Context paragraphs:
May 1998 riots of Indonesia: The May 1998 riots of Indonesia (Indonesian: "Kerusuhan Mei 1998" ), also known as the 1998 Tragedy (Indonesian: "Tragedi 1998" ) or simply the 1998 event (Indonesian: "Peristiwa 1998" ) were incidents of mass violence, demonstrations, and civil unrest of a racial nature that occurred throughout Indonesia, mainly in Medan in the province of North Sumatra (4–8 May), the capital city of Jakarta (12–15 May), and Surakarta (also called Solo) in the province of Central Java (13–15 May).  The riots were triggered by economic problems including food shortages and mass unemployment, and eventually led to the resignation of President Suharto and the fall of the New Order government.  The main targets of the violence were Chinese ethnic, however, most of the people who died in the riots were the Javanese Indonesian looters who targeted the Chinese shops, not the Chinese themselves, since the looters were burnt to death in a massive fire.

Yemeni Civil War (2015–present): 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.  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.  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.

Jaʿār: Jaar (Arabic: جعار "Jaʿār") is a small town and capital of Khanfir District in south-western Yemen.  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.  The town is located about 2 kilometres east of the right bank of the Wadi Bana.

1992 Los Angeles riots: The 1992 Los Angeles riots, also known as the Rodney King riots, the South Central riots, the 1992 Los Angeles civil disturbance, the 1992 Los Angeles civil unrest, and the Los Angeles uprising, were a series of riots, lootings, arsons, and civil disturbances that occurred in Los Angeles County, California in April and May 1992.  The unrest began in South Central Los Angeles on April 29 after a trial jury acquitted four officers of the Los Angeles Police Department of the use of excessive force in the videotaped arrest and beating of Rodney King.  It then spread throughout the Los Angeles metropolitan area as thousands of people rioted over a six-day period following the announcement of the verdict.

Indonesian mass killings of 1965–1966: The Indonesian mass killings of 1965–1966 (also variously known as the Indonesian massacres, Indonesian genocide, Indonesian Communist Purge, Indonesian politicide, or the 1965 Tragedy) were large-scale killings and civil unrest which occurred in Indonesia over many months, targeting communist sympathizers, ethnic Chinese and alleged leftists, often at the instigation of the armed forces and government.  Initially it began as an anti-communist purge following a controversial coup attempt by the 30 September Movement in Indonesia.  The most widely published estimates were that 500,000 to more than one million people were killed, with some more recent estimates going as high as two to three million.  The purge was a pivotal event in the transition to the "New Order" and the elimination of the Indonesian Communist Party (PKI) as a political force.  The upheavals led to the fall of President Sukarno and the commencement of Suharto's three-decade authoritarian presidency.

Fall of Zinjibar and Jaar: 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).  Zinjibar was retaken by pro-government forces 14 August 2016.  This was the second capture and occupation of Zinjibar during unrest in Yemen.  The town was earlier taken by AQAP’s in May 2011 and held until the summer of 2012.

1989 Moldova civil unrest: The 1989 civil unrest in Moldova began on November 7, 1989, in Kishinev, Moldavia and continued on November 10, when protesters burned down the headquarters of the Ministry of Internal Affairs (led by Vladimir Voronin).  Festivals on 7 November 1989 commemorating the October Revolution and 10 November celebrating the Soviet police force offered excellent opportunities for oppositionists to challenge authorities in highly visible settings and disrupt events of premiere importance to the Soviet regime.  Popular Front of Moldova activists, often going beyond the official sanction of the movement leadership, organized actions that embarrassed the republican leadership, ultimately resulted in riots in central Chişinău.  This unrest sealed the fate of the increasingly weak First Secretary of the Communist Party of Moldova.  At the end of a year that had seen Semion Grossu and his organization pummeled from both the national revivalist right and the "ultrarevolutionary" internationalist left, Moscow replaced the First Secretary with Petru Lucinschi in a snap Central Committee plenum on November 16, 1989.

Battle of Sana'a (2014): The Battle of Sana'a in 2014 marked the advance of the Houthis into Sana'a, the capital of Yemen, and heralded the beginning of a coup d'état that unfolded over the following months.  Fighting began on 9 September 2014, when Shia protesters under the command of Abdul-Malik al-Houthi marched on the cabinet office and were fired upon by security forces, leaving seven dead.  The clashes escalated on 18 September, when 40 were killed in an armed confrontation between the Houthis led by military commander Mohammed Ali al-Houthi and supporters of the Sunni hardliner Islah Party when the Houthis tried to seize Yemen TV, and 19 September, with more than 60 killed in clashes between Houthi fighters and the military and police in northern Sana'a.  By 21 September, the Houthis captured the government headquarters, marking the fall of Sana'a.

2014–2017 Venezuelan protests: In 2014, a series of protests, political demonstrations, and civil insurrection began in Venezuela due to the country's high levels of urban violence, inflation, and chronic shortages of basic goods attributed to economic policies such as strict price controls.  While protests occurred in January 2014, after the murder of actress and former Miss Venezuela Mónica Spear, mass protesting began in earnest that February following the attempted rape of a student on a university campus in San Cristóbal.  Subsequent arrests and killings of student protestors spurred their expansion to neighboring cities and the involvement of opposition leaders.  The year's early months were characterized by large demonstrations and violent clashes between protestors and government forces that resulted in nearly 4,000 arrests and 43 deaths, including both supporters and opponents of the government.  Toward the end of 2014, and into 2015, continued shortages and low oil prices caused renewed protesting.  By 2016, protests occurred following the controversy surrounding the 2015 Venezuelan parliamentary elections as well as the incidents surrounding the 2016 recall referendum.  On 1 September 2016, the largest demonstration of the protests occurred, with over 1 million Venezuelans, or over 3% of the entire nation's population, gathered to demand a recall election against President Maduro, with the event being described as the "largest demonstration in the history of Venezuela".  Following the suspension of the recall referendum by the government-leaning National Electoral Council (CNE) on 21 October 2016, the opposition organized another protest which was held on 26 October 2016, with over 1.2 million Venezuelans participating.  After some of the largest protests occurred in a late-2016, Vatican-mediate dialogue between the opposition and government was attempted and ultimately failed in January 2017.  Concentration on protests subsided in the first months of 2017 until the 2017 Venezuelan constitutional crisis occurred when the pro-government Supreme Tribunal of Justice of Venezuela attempted to assume the opposition-led National Assembly and removed their immunity, though the move was reversed days later, demonstrations grew "into the most combative since a wave of unrest in 2014".  The protests are considered to be the Mother of all Protests.

2000s commodities boom: 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.  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.  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.  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.  On 3 March, Libya's National Oil Corp said that output had halved due to the departure of foreign workers.  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.  Thus the price of oil kept rising into the 2010s.  The commodities super-cycle peaked in 2011, "driven by a combination of strong demand from emerging nations and low supply growth."  Prior to 2002, only 5 to 10 per cent of trading in the commodities market was attributable to investors.  Since 2002 "30 per cent of trading is attributable to investors in the commodities market" which "has caused higher price volatility."

Supporting paragraphs: Fall of Zinjibar and Jaar Yemeni Civil War (2015–present)
Answer: 2015