Problem: Please answer a question about the following article about Classical music:
The theories surrounding equal temperament began to be put in wider practice, especially as it enabled a wider range of chromatic possibilities in hard-to-tune keyboard instruments. Although Bach did not use equal temperament, as a modern piano is generally tuned, changes in the temperaments from the meantone system, common at the time, to various temperaments that made modulation between all keys musically acceptable, made possible Bach's Well-Tempered Clavier.
What did Bach not use?
A: equal temperament
Problem: Please answer a question about the following article about American Idol:
The loss of viewers continued into season 12, which saw the show hitting a number of series low in the 18-49 demo. The finale had 7.2 million fewer viewers than the previous season, and saw a drop of 44% in the 18-49 demo. The season viewers averaged at 13.3 million, a drop of 24% from the previous season. The thirteenth season suffered a huge decline in the 1849 demographic, a drop of 28% from the twelfth season, and American Idol lost its Top 10 position in the Nielsen ratings by the end of the 201314 television season for the first time since its entry to the rankings in 2003 as a result, although the entire series to date had not yet been dropped from the Nielsen Top 30 rankings since its inception in 2002.
How many viewers watched on average this season?
A: 13.3 million
Problem: Please answer a question about the following article about Religion in ancient Rome:
Military settlement within the empire and at its borders broadened the context of Romanitas. Rome's citizen-soldiers set up altars to multiple deities, including their traditional gods, the Imperial genius and local deities sometimes with the usefully open-ended dedication to the diis deabusque omnibus (all the gods and goddesses). They also brought Roman "domestic" deities and cult practices with them. By the same token, the later granting of citizenship to provincials and their conscription into the legions brought their new cults into the Roman military.
What type of household gods and cults did soldiers bring to outer areas?
A: domestic
Problem: Please answer a question about the following article about Greeks:
Homer uses the terms Achaeans and Danaans () as a generic term for Greeks in Iliad, and they were probably a part of the Mycenean civilization. The names Achaioi and Danaoi seem to be pre-Dorian belonging to the people who were overthrown. They were forced to the region that later bore the name Achaea after the Dorian invasion. In the 5th century BC, they were redefined as contemporary speakers of Aeolic Greek which was spoken mainly in Thessaly, Boeotia and Lesbos. There are many controversial theories on the origin of the Achaeans. According to one view, the Achaeans were one of the fair-headed tribes of upper Europe, who pressed down over the Alps during the early Iron age (1300 BC) to southern Europe. Another theory suggests that the Peloponnesian Dorians were the Achaeans. These theories are rejected by other scholars who, based on linguistic criteria, suggest that the Achaeans were mainland pre-Dorian Greeks. There is also the theory that there was an Achaean ethnos that migrated from Asia minor to lower Thessaly prior to 2000 BC. Some Hittite texts mention a nation lying to the west called Ahhiyava or Ahhiya. Egyptian documents refer to Ekwesh, one of the groups of sea peoples who attached Egypt during the reign of Merneptah (1213-1203 BCE), who may have been Achaeans.
What is believed to be the derivative of these names ?
A:
pre-Dorian