Given the following passage "Apple announced a battery replacement program on November 14, 2003, a week before a high publicity stunt and website by the Neistat Brothers. The initial cost was US$99, and it was lowered to US$59 in 2005. One week later, Apple offered an extended iPod warranty for US$59. For the iPod Nano, soldering tools are needed because the battery is soldered onto the main board. Fifth generation iPods have their battery attached to the backplate with adhesive.", answer the following question. Note that the answer is present within the text. Question: What was a big problem for Ipods?
Ans: soldering tools are needed because the battery is soldered onto the main board

Given the following passage "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.", answer the following question. Note that the answer is present within the text. Question: What is piano?
Ans: instruments

Given the following passage "With filming completed in Rome, production moved to Mexico City in late March to shoot the film's opening sequence, with scenes to include the Day of the Dead festival filmed in and around the Zocalo and the Centro Historico district. The planned scenes required the city square to be closed for filming a sequence involving a fight aboard a Messerschmitt-Bolkow-Blohm Bo 105 helicopter flown by stunt pilot Chuck Aaron, which called for modifications to be made to several buildings to prevent damage. This particular scene in Mexico required 1,500 extras, 10 giant skeletons and 250,000 paper flowers. Reports in the Mexican media added that the film's second unit would move to Palenque in the state of Chiapas, to film aerial manoeuvres considered too dangerous to shoot in an urban area.", answer the following question. Note that the answer is present within the text. Question: Why were 10 giant skeletons required?
Ans: for filming a sequence involving a fight aboard a Messerschmitt-Bolkow-Blohm Bo 105 helicopter

Given the following passage "Liberia is divided into fifteen counties, which, in turn, are subdivided into a total of 90 districts and further subdivided into clans. The oldest counties are Grand Bassa and Montserrado, both founded in 1839 prior to Liberian independence. Gbarpolu is the newest county, created in 2001. Nimba is the largest of the counties in size at 11,551 km2 (4,460 sq mi), while Montserrado is the smallest at 1,909 km2 (737 sq mi). Montserrado is also the most populous county with 1,144,806 residents as of the 2008 census.", answer the following question. Note that the answer is present within the text. Question: Is Grand Bassa a county, district or clan?
Ans: county