Problem: Antibacterial antibiotics are commonly classified based on their mechanism of action, chemical structure, or spectrum of activity. Most target bacterial functions or growth processes. Those that target the bacterial cell wall (penicillins and cephalosporins) or the cell membrane (polymyxins), or interfere with essential bacterial enzymes (rifamycins, lipiarmycins, quinolones, and sulfonamides) have bactericidal activities. Those that target protein synthesis (macrolides, lincosamides and tetracyclines) are usually bacteriostatic (with the exception of bactericidal aminoglycosides). Further categorization is based on their target specificity. "Narrow-spectrum" antibacterial antibiotics target specific types of bacteria, such as Gram-negative or Gram-positive bacteria, whereas broad-spectrum antibiotics affect a wide range of bacteria. Following a 40-year hiatus in discovering new classes of antibacterial compounds, four new classes of antibacterial antibiotics have been brought into clinical use in the late 2000s and early 2010s: cyclic lipopeptides (such as daptomycin), glycylcyclines (such as tigecycline), oxazolidinones (such as linezolid), and lipiarmycins (such as fidaxomicin).
How many new classes of antibacterial antibiotics was introduced in the late 2000's/
The answer is the following: four

Problem: The free trade spirit of the time received a strong augmentation through the development of a modern, effective stock market in the Low Countries. The Netherlands has the oldest stock exchange in the world, founded in 1602 by the Dutch East India Company. While Rotterdam has the oldest bourse in the Netherlands, the world's first stock exchange that of the Dutch East-India Company went public in six different cities. Later, a court ruled that the company had to reside legally in a single city, so Amsterdam is recognized as the oldest such institution based on modern trading principles. While the banking system evolved in the Low Countries, it was quickly incorporated by the well-connected English, stimulating English economic output.
When was the stock exchange founded in the Netherlands?
The answer is the following: 1602

Problem: There were several other kingdoms which ruled over parts of India in the later medieval period prior to the British occupation. However, most of them were bound to pay regular tribute to the Marathas. The rule of Wodeyar dynasty which established the Kingdom of Mysore in southern India in around 1400 CE by was interrupted by Hyder Ali and his son Tipu Sultan in the later half of the 18th century. Under their rule, Mysore fought a series of wars sometimes against the combined forces of the British and Marathas, but mostly against the British, with Mysore receiving some aid or promise of aid from the French.
To what Kingdom did many small kingdoms pay tribute?
The answer is the following: Marathas

Problem: By May 15, Premier Wen Jiabao ordered the deployment of an additional 90 helicopters, of which 60 were to be provided by the PLAAF, and 30 were to be provided by the civil aviation industry, bringing the total of number of aircraft deployed in relief operations by the air force, army, and civil aviation to over 150, resulting in the largest non-combat airlifting operation in People's Liberation Army history.
How many helicopters were provided by the PLAAF?
The answer is the following:
60