Q: Question: "If the system had pulleys, it would still need what to operate?" Context: "The tide-predicting machine invented by Sir William Thomson in 1872 was of great utility to navigation in shallow waters. It used a system of pulleys and wires to automatically calculate predicted tide levels for a set period at a particular location." Answer:
A: wires

Q: Question: "What happened after the political scenario in Nepal changed?" Context: "With the opening of the tourist industry after the change in the political scenario of Nepal in 1950, the hotel industry drastically improved. Now Kathmandu boasts several luxury such as the Hyatt Regency, Dwarika's, theYak & Yeti, The Everest Hotel, Hotel Radisson, Hotel De L'Annapurna, The Malla Hotel, Shangri-La Hotel (which is not operated by the Shangri-La Hotel Group) and The Shanker Hotel. There are several four-star hotels such as Hotel Vaishali, Hotel Narayani, The Blue Star and Grand Hotel. The Garden Hotel, Hotel Ambassador, and Aloha Inn are among the three-star hotels in Kathmandu. Hotels like Hyatt Regency, De L'Annapurna and Hotel Yak & Yeti are among the five-star hotels providing casinos as well." Answer:
A: the hotel industry drastically improved

Q: Question: "the field of study about origins of words is" Context: "Although the etymology of the name has been studied since the 7th century by authors like Isidore of Seville who wrote that "Galicians are called so, because of their fair skin, as the Gauls", relating the name to the Greek word for milk, currently scholars derive the name of the ancient Callaeci either from Proto-Indo-European *kal-n-eH2 'hill', through a local relational suffix -aik-, so meaning 'the hill (people)'; or either from Proto-Celtic *kalli- 'forest', so meaning 'the forest (people)'. In any case, Galicia, being per se a derivation of the ethnic name Kallaikoi, would mean 'the land of the Galicians'." Answer:
A: etymology

Q: Question: "Early in the Protestant Reformation, what concept began?" Context: "Contrary to how the Protestant Reformers were often characterized, the concept of a catholic or universal Church was not brushed aside during the Protestant Reformation. On the contrary, the visible unity of the catholic or universal church was seen by the Protestant reformers as an important and essential doctrine of the Reformation. The Magisterial reformers, such as Martin Luther, John Calvin, and Huldrych Zwingli, believed that they were reforming the Roman Catholic Church, which they viewed as having become corrupted. Each of them took very seriously the charges of schism and innovation, denying these charges and maintaining that it was the Roman Catholic Church that had left them. In order to justify their departure from the Roman Catholic Church, Protestants often posited a new argument, saying that there was no real visible Church with divine authority, only a spiritual, invisible, and hidden churchthis notion began in the early days of the Protestant Reformation." Answer:
A:
there was no real visible Church with divine authority, only a spiritual, invisible, and hidden church