Input: Read this: Uranium metal heated to 250 to 300 C (482 to 572 F) reacts with hydrogen to form uranium hydride. Even higher temperatures will reversibly remove the hydrogen. This property makes uranium hydrides convenient starting materials to create reactive uranium powder along with various uranium carbide, nitride, and halide compounds. Two crystal modifications of uranium hydride exist: an form that is obtained at low temperatures and a form that is created when the formation temperature is above 250 C.
Question: How many crystal modifications of plutonium hydride are extant?

Output: unanswerable

QUES: The state government left Philadelphia in 1799, and the federal government was moved to Washington, DC in 1800 with completion of the White House and Capitol. The city remained the young nation's largest with a population of nearly 50,000 at the turn of the 19th century; it was a financial and cultural center. Before 1800, its free black community founded the African Methodist Episcopal Church (AME), the first independent black denomination in the country, and the first black Episcopal Church. The free black community also established many schools for its children, with the help of Quakers. New York City soon surpassed Philadelphia in population, but with the construction of roads, canals, and railroads, Philadelphia became the first major industrial city in the United States.

What religion did the black community found?
What is the answer?
ANS: African Methodist Episcopal Church

QUES: The ISO 216 system used in most other countries is based on the surface area of a sheet of paper, not on a sheet's width and length. It was first adopted in Germany in 1922 and generally spread as nations adopted the metric system. The largest standard size paper is A0 (A zero), measuring one square meter (approx. 1189 841 mm). Two sheets of A1, placed upright side by side fit exactly into one sheet of A0 laid on its side. Similarly, two sheets of A2 fit into one sheet of A1 and so forth. Common sizes used in the office and the home are A4 and A3 (A3 is the size of two A4 sheets).
What is the lowest numbered A paper that is uncommonly used at home?

ANS: unanswerable

Insects are the only group of invertebrates to have developed flight. The evolution of insect wings has been a subject of debate. Some entomologists suggest that the wings are from paranotal lobes, or extensions from the insect's exoskeleton called the nota, called the paranotal theory. Other theories are based on a pleural origin. These theories include suggestions that wings originated from modified gills, spiracular flaps or as from an appendage of the epicoxa. The epicoxal theory suggests the insect wings are modified epicoxal exites, a modified appendage at the base of the legs or coxa. In the Carboniferous age, some of the Meganeura dragonflies had as much as a 50 cm (20 in) wide wingspan. The appearance of gigantic insects has been found to be consistent with high atmospheric oxygen. The respiratory system of insects constrains their size, however the high oxygen in the atmosphere allowed larger sizes. The largest flying insects today are much smaller and include several moth species such as the Atlas moth and the White Witch (Thysania agrippina).
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Wings from the paranotal lobes are based on what theory?
Ah, so.. paranotal theory

Question: "Near East" remained popular in diplomatic, trade and journalistic circles, but a variation soon developed among the scholars and the men of the cloth and their associates: "the Nearer East," reverting to the classical and then more scholarly distinction of "nearer" and "farther." They undoubtedly saw a need to separate the Biblical lands from the terrain of the Ottoman Empire. The Christians saw the country as the land of the Old and New Testaments, where Christianity had developed. The scholars in the field of studies that eventually became Biblical archaeology attempted to define it on the basis of archaeology.
Try to answer this question if possible: How did the scholars attempt their definition?
Answer: on the basis of archaeology

Question: During the 19th century, it was not infrequent for the Foreign Office to approach The Times and ask for continental intelligence, which was often superior to that conveyed by official sources.[citation needed]
Try to answer this question if possible: Which century was The Times first often relied upon for continental intelligence?
Answer:
19th century