Problem: Alluvial diamond and gold mining activities also account for some economic activity. In recent years , foreign investment from ArcelorMittal Steel, BHP Biliton, and China Union is aiding the revitalization of the iron-ore mining sector. Liberia has begun exploration for offshore oil; unproven oil reserves may be in excess of one billion barrels. The government divided its offshore waters into 17 blocks and began auctioning off exploration licenses for the blocks in 2004, with further auctions in 2007 and 2009. An additional 13 ultra-deep offshore blocks were demarcated in 2011 and planned for auction. Among the companies to have won licenses are Repsol, Chevron, Anadarko and Woodside Petroleum.
Answer this question based on the article: How many years spanned these events?
A: 7

Problem: After the defeat of several Song armies in the north, Emperor Qinzong wanted to negotiate a truce with the Jin, but he committed a massive strategic blunder when he commanded his remaining armies to protect prefectural cities instead of Kaifeng. Neglecting the importance of the capital, he left Kaifeng defended with fewer than 100,000 soldiers. The Song forces were dispersed throughout China, powerless to stop the second Jurchen siege of the city. The Jin assault commenced in mid December 1126. Even as fighting raged on, Qinzong continued to sue for peace, but Jin demands for territory were enormous: they wanted all provinces north of the Yellow River. After more than twenty days of heavy combat against the besieging forces, Song defenses were decimated and the morale of Song soldiers was on the decline. On January 9, 1127, the Jurchens broke through and started to loot the conquered city. Emperor Qinzong tried to appease the victors by offering the remaining wealth of the capital. The royal treasury was emptied and the belongings of the city's residents were seized. The Song emperor offered his unconditional surrender a few days later. Qinzong, the former emperor Huizong, and members of the Song court were captured by the Jurchens as hostages. They were taken north to Huining , where they were stripped of their royal privileges and reduced to commoners. The former emperors were humiliated by their captors. They were mocked with disparaging titles like "Muddled Virtue" and "Double Muddled". In 1128 the Jin made them perform a ritual meant for war criminals. The harsh treatment of the Song royalty softened after the death of Huizong in 1135. Titles were granted to the deceased monarch, and his son Qinzong was promoted to Duke, a position with a salary.
Answer this question based on the article: Who was restored to a position of power after Huizong's death?
A: Qinzong

Problem: Through Congress and Inter-Congress meetings, and ongoing scientific Working Groups, PSA provides an interdisciplinary platform for scientists to discuss and review common concerns and priorities in the region. Through our scientific network, PSA links scientists from developed countries with those from developing countries, including the archipelagic and more remote states of the Pacific. PSA facilitates research initiatives on critical emerging issues for the region, such as biodiversity loss, climate change, infectious diseases, and the social implications of globalization, in which science can provide crucial information in a way that is required by both society and policymakers to make sound and informed decisions. PSA is a Scientific Associate of the International Council for Science . PSA's ongoing activities include: Multi-symposia Pacific Science Congresses, held in a different location every four years. Somewhat smaller and more topically focused Inter-Congress meetings are also held in between each Congress. The 21st Congress was held in Okinawa, Japan in June 2007, and the 11th Inter-Congress was held in Tahiti, French Polynesia in March 2009. The next Congress will be at the Kuala Lumpur Convention Center in Kuala Lumpur, Malaysia from 13-17 June 2011. Pacific Science, the official journal of the PSA. Pacific Science is a quarterly journal devoted to the biological, physical, and social sciences of the Pacific Region.
Answer this question based on the article: What is the official journal of the PSA focused on?
A:
biological, physical, and social sciences