Input: Read this: The UK political system, while technically a multi-party system, has functioned generally as a two-party (sometimes called a "two-and-a-half party") system; since the 1920s the two largest political parties have been the Conservative Party and the Labour Party. Before the Labour Party rose in British politics the Liberal Party was the other major political party along with the Conservatives. Though coalition and minority governments have been an occasional feature of parliamentary politics, the first-past-the-post electoral system used for general elections tends to maintain the dominance of these two parties, though each has in the past century relied upon a third party to deliver a working majority in Parliament. (A plurality voting system usually leads to a two-party system, a relationship described by Maurice Duverger and known as Duverger's Law.) There are also numerous other parties that hold or have held a number of seats in Parliament.
Question: When was Duverger's Law passed in the UK?

Output: unanswerable

Input: Read this: Since 1898, Puerto Rico has had limited representation in the Congress in the form of a Resident Commissioner, a nonvoting delegate. The 110th Congress returned the Commissioner's power to vote in the Committee of the Whole, but not on matters where the vote would represent a decisive participation. Puerto Rico has elections on the United States presidential primary or caucus of the Democratic Party and the Republican Party to select delegates to the respective parties' national conventions although presidential electors are not granted on the Electoral College. As American citizens, Puerto Ricans can vote in U.S. presidential elections, provided they reside in one of the 50 states or the District of Columbia and not in Puerto Rico itself.
Question: How long has Puerto Rico had Commissioner representation?

Output: unanswerable

Input: Read this: Elizabeth's many historic visits and meetings include a state visit to the Republic of Ireland and reciprocal visits to and from the Pope. She has seen major constitutional changes, such as devolution in the United Kingdom, Canadian patriation, and the decolonisation of Africa. She has also reigned through various wars and conflicts involving many of her realms. She is the world's oldest reigning monarch as well as Britain's longest-lived. In 2015, she surpassed the reign of her great-great-grandmother, Queen Victoria, to become the longest-reigning British head of state and the longest-reigning queen regnant in world history.
Question: What was the last year that Elizabeth did a state visit in the Republic of Ireland?

Output: unanswerable

Input: Read this: In February 1925, the Cardinal Secretary of State Pietro Gasparri summoned him to the Vatican and informed him of Pope Pius XI's decision to appoint him as the Apostolic Visitor to Bulgaria (192535). On 3 March, Pius XI also named him for consecration as titular archbishop of Areopolis, Jordan. Roncalli was initially reluctant about a mission to Bulgaria, but he would soon relent. His nomination as apostolic visitor was made official on 19 March. Roncalli was consecrated by Giovanni Tacci Porcelli in the church of San Carlo alla Corso in Rome. After he was consecrated, he introduced his family to Pope Pius XI. He chose as his episcopal motto Obedientia et Pax ("Obedience and Peace"), which became his guiding motto. While he was in Bulgaria, an earthquake struck in a town not too far from where he was. Unaffected, he wrote to his sisters Ancilla and Maria and told them both that he was fine.
Question: When was Pius XI asked to come to the Vatican by the Cardinal Secretary of State?

Output:
unanswerable