Question: Read this and answer the question

The Roman Empire reached its greatest territorial extent during the 2nd century AD; the following two centuries witnessed the slow decline of Roman control over its outlying territories. Economic issues, including inflation, and external pressure on the frontiers combined to make the 3rd century politically unstable, with emperors coming to the throne only to be rapidly replaced by new usurpers. Military expenses increased steadily during the 3rd century, mainly in response to the war with Sassanid Persia, which revived in the middle of the 3rd century. The army doubled in size, and cavalry and smaller units replaced the legion as the main tactical unit. The need for revenue led to increased taxes and a decline in numbers of the curial, or landowning, class, and decreasing numbers of them willing to shoulder the burdens of holding office in their native towns. More bureaucrats were needed in the central administration to deal with the needs of the army, which led to complaints from civilians that there were more tax-collectors in the empire than tax-payers.

How much did the size of the Roman army increase in the 3rd century?
Answer: doubled


Problem: Philadelphia is home to many national historical sites that relate to the founding of the United States. Independence National Historical Park is the center of these historical landmarks being one of the country's 22 UNESCO World Heritage Sites. Independence Hall, where the Declaration of Independence was signed, and the Liberty Bell are the city's most famous attractions. Other historic sites include homes for Edgar Allan Poe, Betsy Ross, and Thaddeus Kosciuszko, early government buildings like the First and Second Banks of the United States, Fort Mifflin, and the Gloria Dei (Old Swedes') Church. Philadelphia alone has 67 National Historic Landmarks, the third most of any city in the country.
How many UNESCO sites does the U.S. have?
The answer is the following: 22 UNESCO World Heritage Sites


Many important biochemical reactions, such as energy generation, use concentration gradients across membranes. The general lack of internal membranes in bacteria means reactions such as electron transport occur across the cell membrane between the cytoplasm and the periplasmic space. However, in many photosynthetic bacteria the plasma membrane is highly folded and fills most of the cell with layers of light-gathering membrane. These light-gathering complexes may even form lipid-enclosed structures called chlorosomes in green sulfur bacteria. Other proteins import nutrients across the cell membrane, or expel undesired molecules from the cytoplasm.
How does electron transit occur in bacteria?
between the cytoplasm and the periplasmic space


Input: Boston
Boston's park system is well-reputed nationally. In its 2013 ParkScore ranking, The Trust for Public Land reported that Boston was tied with Sacramento and San Francisco for having the third-best park system among the 50 most populous US cities. ParkScore ranks city park systems by a formula that analyzes the city's median park size, park acres as percent of city area, the percent of residents within a half-mile of a park, spending of park services per resident, and the number of playgrounds per 10,000 residents.

Who ranks city park systems?
Output: ParkScore


Input: Article: The Crimean War was one of the first conflicts to use modern technologies such as explosive naval shells, railways, and telegraphs.(Preface) The war was one of the first to be documented extensively in written reports and photographs. As the legend of the "Charge of the Light Brigade" demonstrates, the war quickly became an iconic symbol of logistical, medical and tactical failures and mismanagement. The reaction in the UK was a demand for professionalization, most famously achieved by Florence Nightingale, who gained worldwide attention for pioneering modern nursing while treating the wounded.

Now answer this question: Who was recognized for treating the wounded while pioneering modern nursing?

Output: Florence Nightingale


Problem: Dell sells personal computers (PCs), servers, data storage devices, network switches, software, computer peripherals, HDTVs, cameras, printers, MP3 players, and electronics built by other manufacturers. The company is well known for its innovations in supply chain management and electronic commerce, particularly its direct-sales model and its "build-to-order" or "configure to order" approach to manufacturing—delivering individual PCs configured to customer specifications. Dell was a pure hardware vendor for much of its existence, but with the acquisition in 2009 of Perot Systems, Dell entered the market for IT services. The company has since made additional acquisitions in storage and networking systems, with the aim of expanding their portfolio from offering computers only to delivering complete solutions for enterprise customers.
Innovations in what kind of management is Dell known for?
The answer is the following:
supply chain