Problem: Please answer a question about the following article about Electric motor:
After many other more or less successful attempts with relatively weak rotating and reciprocating apparatus the Prussian Moritz von Jacobi created the first real rotating electric motor in May 1834 that actually developed a remarkable mechanical output power. His motor set a world record which was improved only four years later in September 1838 by Jacobi himself. His second motor was powerful enough to drive a boat with 14 people across a wide river. It was not until 1839/40 that other developers worldwide managed to build motors of similar and later also of higher performance.
Who created the first real electric motor?
A: Moritz von Jacobi
Problem: Please answer a question about the following article about Marshall Islands:
Politically, the Marshall Islands is a presidential republic in free association with the United States, with the US providing defense, subsidies, and access to U.S. based agencies such as the FCC and the USPS. With few natural resources, the islands' wealth is based on a service economy, as well as some fishing and agriculture; aid from the United States represents a large percentage of the islands' gross domestic product. The country uses the United States dollar as its currency.
What is the main focus of the Marshall Islands' economy?
A: service
Problem: Please answer a question about the following article about New York City:
The New York City Fire Department (FDNY), provides fire protection, technical rescue, primary response to biological, chemical, and radioactive hazards, and emergency medical services for the five boroughs of New York City. The New York City Fire Department is the largest municipal fire department in the United States and the second largest in the world after the Tokyo Fire Department. The FDNY employs approximately 11,080 uniformed firefighters and over 3,300 uniformed EMTs and paramedics. The FDNY's motto is New York's Bravest.
What is the second largest fire department force in the world?
A: The New York City Fire Department
Problem: Please answer a question about the following article about John, King of England:
When John's elder brother Richard became king in September 1189, he had already declared his intention of joining the Third Crusade. Richard set about raising the huge sums of money required for this expedition through the sale of lands, titles and appointments, and attempted to ensure that he would not face a revolt while away from his empire. John was made Count of Mortain, was married to the wealthy Isabel of Gloucester, and was given valuable lands in Lancaster and the counties of Cornwall, Derby, Devon, Dorset, Nottingham and Somerset, all with the aim of buying his loyalty to Richard whilst the king was on crusade. Richard retained royal control of key castles in these counties, thereby preventing John from accumulating too much military and political power, and, for the time being, the king named the four-year-old Arthur of Brittany as the heir to the throne. In return, John promised not to visit England for the next three years, thereby in theory giving Richard adequate time to conduct a successful crusade and return from the Levant without fear of John seizing power. Richard left political authority in England – the post of justiciar – jointly in the hands of Bishop Hugh de Puiset and William Mandeville, and made William Longchamp, the Bishop of Ely, his chancellor. Mandeville immediately died, and Longchamp took over as joint justiciar with Puiset, which would prove to be a less than satisfactory partnership. Eleanor, the queen mother, convinced Richard to allow John into England in his absence.
Who convinced Richard to allow John to join into England?
A:
Eleanor