Input: Article: Timber was the chief building material during the Han dynasty; it was used to build palace halls, multi-story residential towers and halls and single-story houses. Because wood decays rapidly, the only remaining evidence of Han wooden architecture is a collection of scattered ceramic roof tiles. The oldest surviving wooden halls in China date to the Tang dynasty (618907 AD). Architectural historian Robert L. Thorp points out the scarcity of Han-era archaeological remains, and claims that often unreliable Han-era literary and artistic sources are used by historians for clues about lost Han architecture.

Now answer this question: What dynasty can the oldest wooden buildings in China be dated to?

Output: Tang

Input: Article: The operational framework is provided by the Byelaws, which are more frequently updated than the Charter. Any revisions to the Charter or Byelaws require the Privy Council's approval.

Now answer this question: What guidelines for the Royal Institute are updated most often?

Output: the Byelaws

Input: Article: Following the Battle of Hakusukinoe against Tang China and Silla in 663 AD that led to a Japanese retreat from Korean affairs, Japan underwent widespread reform. One of the most important was that of the Taika Reform, issued by Prince Naka no Oe (Emperor Tenji) in 646 AD. This edict allowed the Japanese aristocracy to adopt the Tang dynasty political structure, bureaucracy, culture, religion, and philosophy. As part of the Taiho Code, of 702 AD, and the later Yoro Code, the population was required to report regularly for census, a precursor for national conscription. With an understanding of how the population was distributed, Emperor Mommu introduced a law whereby 1 in 34 adult males was drafted into the national military. These soldiers were required to supply their own weapons, and in return were exempted from duties and taxes. This was one of the first attempts by the Imperial government to form an organized army modeled after the Chinese system. It was called "Gundan-Sei" () by later historians and is believed to have been short-lived.[citation needed]

Now answer this question: Who led the Taika Reform?

Output:
Prince Naka no Oe (Emperor Tenji)