Problem: New York City:

The character of New York's large residential districts is often defined by the elegant brownstone rowhouses and townhouses and shabby tenements that were built during a period of rapid expansion from 1870 to 1930. In contrast, New York City also has neighborhoods that are less densely populated and feature free-standing dwellings. In neighborhoods such as Riverdale (in the Bronx), Ditmas Park (in Brooklyn), and Douglaston (in Queens), large single-family homes are common in various architectural styles such as Tudor Revival and Victorian.

In what borough is the Ditmas Park neighborhood located?
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A: Brooklyn

Problem: Several animal phyla are recognized for their lack of bilateral symmetry, and are thought to have diverged from other animals early in evolution. Among these, the sponges (Porifera) were long thought to have diverged first, representing the oldest animal phylum. They lack the complex organization found in most other phyla. Their cells are differentiated, but in most cases not organized into distinct tissues. Sponges typically feed by drawing in water through pores. However, a series of phylogenomic studies from 2008-2015 have found support for Ctenophora, or comb jellies, as the basal lineage of animals. This result has been controversial, since it would imply that that sponges may not be so primitive, but may instead be secondarily simplified. Other researchers have argued that the placement of Ctenophora as the earliest-diverging animal phylum is a statistical anomaly caused by the high rate of evolution in ctenophore genomes.
During what time were a series of phylogenomic studies conducted that found support for comb jellies as the basal lineage of animals?
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Answer: 2008-2015

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
During the 20th century Valencia remained the third most populous city of Spain as its population tripled, rising from 213,550 inhabitants in 1900 to 739,014 in 2000. Valencia was also third in industrial and economic development; notable milestones include urban expansion of the city in the latter 1800s, the creation of the Banco de Valencia in 1900, construction of the Central and Columbus markets, and the construction of the Gare du Nord railway station, completed in 1921. The new century was marked in Valencia with a major event, the Valencian regional exhibition of 1909 (La Exposicion Regional Valenciana de 1909), which emulated the national and universal expositions held in other cities. This production was promoted by the Ateneo Mercantil de Valencia (Mercantile Athenaeum of Valencia), especially by its chairman, Tomas Trenor y Palavicino, and had the support of the Government and the Crown; it was officially inaugurated by King Alfonso XIII himself.
When was the Gare du Nord station finished?
A: 1921

Context and question: Widespread rumors of Napoleon's return from St. Helena and Napoleon as an inspiration for patriotism, individual and collective liberties, and political mobilization manifested themselves in seditious materials, displaying the tricolor and rosettes. There were also subversive activities celebrating anniversaries of Napoleon's life and reign and disrupting royal celebrationsthey demonstrated the prevailing and successful goal of the varied supporters of Napoleon to constantly destabilize the Bourbon regime.
Anniversaries of Napoleon's life and reign were sometimes celebrated in an effort to disrupt what?
Answer: royal celebrations

Question: Materialism is a form of philosophical monism which holds that matter is the fundamental substance in nature, and that all phenomena, including mental phenomena and consciousness, are identical with material interactions.
Is there an answer to this question: What is the definition of philosophical monism?

Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Winners receive the FA Cup trophy, of which there have been two designs and five actual cups; the latest is a 2014 replica of the second design, introduced in 1911. Winners also qualify for European football and a place in the FA Community Shield match. Arsenal are the current holders, having beaten Aston Villa 40 in the 2015 final to win the cup for the second year in a row. It was their 12th FA Cup title overall, making Arsenal the FA Cup's most successful club ahead of Manchester United on 11.
How many FA Cup Trophy replicas have been made?
A:
unanswerable