Problem: Royal Institute of British Architects:

Its services include RIBA Insight, RIBA Appointments, and RIBA Publishing. It publishes the RIBA Product Selector and RIBA Journal. In Newcastle is the NBS, the National Building Specification, which has 130 staff and deals with the building regulations and the Construction Information Service. RIBA Bookshops, which operates online and at 66 Portland Place, is also part of RIBA Enterprises.

Where is the NBS banned?
---
A: unanswerable


Problem: Germans:

The Nazis, led by Adolf Hitler, attempted to unite all the people they claimed were "Germans" (Volksdeutsche) into one realm, including ethnic Germans in eastern Europe, many of whom had emigrated more than one hundred fifty years before and developed separate cultures in their new lands. This idea was initially welcomed by many ethnic Germans in Sudetenland, Austria, Poland, Danzig and western Lithuania, particularly the Germans from Klaipeda (Memel). The Swiss resisted the idea. They had viewed themselves as a distinctly separate nation since the Peace of Westphalia of 1648.

Who welcomed the idea in area such as Sudetenland and Poland?
---
A: ethnic Germans


Problem: Central African Republic:

A new government was appointed on 31 March 2013, which consisted of members of Séléka and representatives of the opposition to Bozizé, one pro-Bozizé individual, and a number representatives of civil society. On 1 April, the former opposition parties declared that they would boycott the government. After African leaders in Chad refused to recognize Djotodia as President, proposing to form a transitional council and the holding of new elections, Djotodia signed a decree on 6 April for the formation of a council that would act as a transitional parliament. The council was tasked with electing a president to serve prior to elections in 18 months.

What groups does the transient parliament consist of?
---
A: unanswerable


Problem: Modern history:

After the early 20th century revolutions, shifting alliances of China's regional warlords waged war for control of the Beijing government. Despite the fact that various warlords gained control of the government in Beijing during the warlord era, this did not constitute a new era of control or governance, because other warlords did not acknowledge the transitory governments in this period and were a law unto themselves. These military-dominated governments were collectively known as the Beiyang government. The warlord era ended around 1927.

When did the warlord era end?
---
A:
around 1927