Problem: Daylighting is the oldest method of interior lighting. Daylighting is simply designing a space to use as much natural light as possible. This decreases energy consumption and costs, and requires less heating and cooling from the building. Daylighting has also been proven to have positive effects on patients in hospitals as well as work and school performance. Due to a lack of information that indicate the likely energy savings, daylighting schemes are not yet popular among most buildings.
What is the oldest method of interior lighting? 
The answer is the following: Daylighting

Problem: The ability of the Dominions to set their own foreign policy, independent of Britain, was recognised at the 1923 Imperial Conference. Britain's request for military assistance from the Dominions at the outbreak of the Chanak Crisis the previous year had been turned down by Canada and South Africa, and Canada had refused to be bound by the 1923 Treaty of Lausanne. After pressure from Ireland and South Africa, the 1926 Imperial Conference issued the Balfour Declaration, declaring the Dominions to be "autonomous Communities within the British Empire, equal in status, in no way subordinate one to another" within a "British Commonwealth of Nations". This declaration was given legal substance under the 1931 Statute of Westminster. The parliaments of Canada, Australia, New Zealand, the Union of South Africa, the Irish Free State and Newfoundland were now independent of British legislative control, they could nullify British laws and Britain could no longer pass laws for them without their consent. Newfoundland reverted to colonial status in 1933, suffering from financial difficulties during the Great Depression. Ireland distanced itself further from Britain with the introduction of a new constitution in 1937, making it a republic in all but name.
When was the Balfour Declaration issued?
The answer is the following: 1926

Problem: After Richard's death on 6 April 1199 there were two potential claimants to the Angevin throne: John, whose claim rested on being the sole surviving son of Henry II, and young Arthur I of Brittany, who held a claim as the son of John's elder brother Geoffrey. Richard appears to have started to recognise John as his heir presumptive in the final years before his death, but the matter was not clear-cut and medieval law gave little guidance as to how the competing claims should be decided. With Norman law favouring John as the only surviving son of Henry II and Angevin law favouring Arthur as the only son of Henry's elder son, the matter rapidly became an open conflict. John was supported by the bulk of the English and Norman nobility and was crowned at Westminster, backed by his mother, Eleanor. Arthur was supported by the majority of the Breton, Maine and Anjou nobles and received the support of Philip II, who remained committed to breaking up the Angevin territories on the continent. With Arthur's army pressing up the Loire valley towards Angers and Philip's forces moving down the valley towards Tours, John's continental empire was in danger of being cut in two.
Where was John crowned?
The answer is the following: Westminster

Problem: At the time of Harold Evans' appointment as editor in 1981, The Times had an average daily sale of 282,000 copies in comparison to the 1.4 million daily sales of its traditional rival The Daily Telegraph. By November 2005 The Times sold an average of 691,283 copies per day, the second-highest of any British "quality" newspaper (after The Daily Telegraph, which had a circulation of 903,405 copies in the period), and the highest in terms of full-rate sales. By March 2014, average daily circulation of The Times had fallen to 394,448 copies, compared to The Daily Telegraph's 523,048, with the two retaining respectively the second-highest and highest circulations among British "quality" newspapers. In contrast The Sun, the highest-selling "tabloid" daily newspaper in the United Kingdom, sold an average of 2,069,809 copies in March 2014, and the Daily Mail, the highest-selling "middle market" British daily newspaper, sold an average of 1,708,006 copies in the period.
What year was Harold Evans appointed to editor of The Times?
The answer is the following:
1981