Problem: Kerry "has emerged in the past few years as an important envoy for Afghanistan and Pakistan during times of crisis," a Washington Post report stated in May 2011, as Kerry undertook another trip to the two countries. The killing of Osama bin Laden "has generated perhaps the most important crossroads yet," the report continued, as the senator spoke at a press conference and prepared to fly from Kabul to Pakistan. Among matters discussed during the May visit to Pakistan, under the general rubric of "recalibrating" the bilateral relationship, Kerry sought and retrieved from the Pakistanis the tail-section of the U.S. helicopter which had had to be abandoned at Abbottabad during the bin Laden strike. In 2013, Kerry met with Pakistan's army chief Gen. Ashfaq Parvez Kayani to discuss the peace process with the Taliban in Afghanistan.
Who was Pakistan's army chief in 2013?
The answer is the following: Gen. Ashfaq Parvez Kayani

Problem: Texts on architecture have been written since ancient time. These texts provided both general advice and specific formal prescriptions or canons. Some examples of canons are found in the writings of the 1st-century BCE Roman Architect Vitruvius. Some of the most important early examples of canonic architecture are religious.
Aside from general advice what did the texts contain?
The answer is the following: specific formal prescriptions

Problem: Unfortunately for those who wanted or were required to wear green, there were no good vegetal green dyes which resisted washing and sunlight. Green dyes were made out of the fern, plantain, buckthorn berries, the juice of nettles and of leeks, the digitalis plant, the broom plant, the leaves of the fraxinus, or ash tree, and the bark of the alder tree, but they rapidly faded or changed color. Only in the 16th century was a good green dye produced, by first dyeing the cloth blue with woad, and then yellow with reseda luteola, also known as yellow-weed.
What was known as yellow-weed?
The answer is the following: reseda luteola

Problem: Even with the five largest cities in Sichuan suffering only minor damage from the quake, some estimates of the economic loss run higher than US$75 billion, making the earthquake one of the costliest natural disasters in Chinese history.
What is an estimate of the economic loss from the quake?
The answer is the following:
$75 billion