Problem: Please answer a question about the following article about Southeast Asia:
The Majapahit Empire was an Indianised kingdom based in eastern Java from 1293 to around 1500. Its greatest ruler was Hayam Wuruk, whose reign from 1350 to 1389 marked the empire's peak when it dominated other kingdoms in the southern Malay Peninsula, Borneo, Sumatra, and Bali. Various sources such as the Nagarakertagama also mention that its influence spanned over parts of Sulawesi, Maluku, and some areas of western New Guinea and the Philippines, making it the largest empire to ever exist in Southeast Asian history.
Which ruler reigned between 1350 to 1389?
A: Hayam Wuruk
Problem: Please answer a question about the following article about Franco-Prussian War:
The French Marines and naval infantry intended for the invasion of northern Germany were dispatched to reinforce the French Army of Châlons and fell into captivity at Sedan along with Napoleon III. A shortage of officers, following the capture of most of the professional French army at the Siege of Metz and at the Battle of Sedan, led naval officers to be sent from their ships to command hastily assembled reservists of the Garde Mobile. As the autumn storms of the North Sea forced the return of more of the French ships, the blockade of the north German ports diminished and in September 1870 the French navy abandoned the blockade for the winter. The rest of the navy retired to ports along the English Channel and remained in port for the rest of the war.
The autumn storms of what sea forced the return of yet more French ships?
A: the North Sea
Problem: Please answer a question about the following article about Race (human categorization):
The authors of the study also examined 77 college textbooks in biology and 69 in physical anthropology published between 1932 and 1989. Physical anthropology texts argued that biological races exist until the 1970s, when they began to argue that races do not exist. In contrast, biology textbooks did not undergo such a reversal but many instead dropped their discussion of race altogether. The authors attributed this to biologists trying to avoid discussing the political implications of racial classifications, instead of discussing them, and to the ongoing discussions in biology about the validity of the concept "subspecies". The authors also noted that some widely used textbooks in biology such as Douglas J. Futuyama's 1986 "Evolutionary Biology" had abandoned the race concept, "The concept of race, masking the overwhelming genetic similarity of all peoples and the mosaic patterns of variation that do not correspond to racial divisions, is not only socially dysfunctional but is biologically indefensible as well (pp. 5 18-5 19)." (Lieberman et al. 1992, pp. 316–17)
How many college textbooks in biology did the authors of the study examine?
A: 77
Problem: Please answer a question about the following article about Alexander Graham Bell:
Bell believed the photophone's principles were his life's "greatest achievement", telling a reporter shortly before his death that the photophone was "the greatest invention [I have] ever made, greater than the telephone". The photophone was a precursor to the fiber-optic communication systems which achieved popular worldwide usage in the 1980s. Its master patent was issued in December 1880, many decades before the photophone's principles came into popular use.
When was fiber-optics first patented?
A:
1880