Problem: There are three classes of components for oxide glasses: network formers, intermediates, and modifiers. The network formers (silicon, boron, germanium) form a highly cross-linked network of chemical bonds. The intermediates (titanium, aluminium, zirconium, beryllium, magnesium, zinc) can act as both network formers and modifiers, according to the glass composition. The modifiers (calcium, lead, lithium, sodium, potassium) alter the network structure; they are usually present as ions, compensated by nearby non-bridging oxygen atoms, bound by one covalent bond to the glass network and holding one negative charge to compensate for the positive ion nearby. Some elements can play multiple roles; e.g. lead can act both as a network former (Pb4+ replacing Si4+), or as a modifier.
What type of chemical attachment connects ions to the network?
The answer is the following: covalent bond

In 1516, William IV, Duke of Bavaria, adopted the Reinheitsgebot (purity law), perhaps the oldest food-quality regulation still in use in the 21st century, according to which the only allowed ingredients of beer are water, hops and barley-malt. Beer produced before the Industrial Revolution continued to be made and sold on a domestic scale, although by the 7th century AD, beer was also being produced and sold by European monasteries. During the Industrial Revolution, the production of beer moved from artisanal manufacture to industrial manufacture, and domestic manufacture ceased to be significant by the end of the 19th century. The development of hydrometers and thermometers changed brewing by allowing the brewer more control of the process and greater knowledge of the results.
Who was the Duke of Bavaria in 1516?
William IV

Input: Premier League
There has been an increasing gulf between the Premier League and the Football League. Since its split with the Football League, many established clubs in the Premier League have managed to distance themselves from their counterparts in lower leagues. Owing in large part to the disparity in revenue from television rights between the leagues, many newly promoted teams have found it difficult to avoid relegation in their first season in the Premier League. In every season except 200102 and 201112, at least one Premier League newcomer has been relegated back to the Football League. In 199798 all three promoted clubs were relegated at the end of the season.

How many newly promoted clubs were relegated from the Premier League in 1997-98?
Output: three

Input: Article: In India, the Supreme Court of India was created on January 28, 1950 after adoption of the Constitution. Article 141 of the Constitution of India states that the law declared by Supreme Court is to be binding on all Courts within the territory of India. It is the highest court in India and has ultimate judicial authority to interpret the Constitution and decide questions of national law (including local bylaws). The Supreme Court is also vested with the power of judicial review to ensure the application of the rule of law.

Now answer this question: On what date was India's Supreme Court established?

Output: January 28, 1950

Article: Agriculture and horticulture seek to optimize the capture of solar energy in order to optimize the productivity of plants. Techniques such as timed planting cycles, tailored row orientation, staggered heights between rows and the mixing of plant varieties can improve crop yields. While sunlight is generally considered a plentiful resource, the exceptions highlight the importance of solar energy to agriculture. During the short growing seasons of the Little Ice Age, French and English farmers employed fruit walls to maximize the collection of solar energy. These walls acted as thermal masses and accelerated ripening by keeping plants warm. Early fruit walls were built perpendicular to the ground and facing south, but over time, sloping walls were developed to make better use of sunlight. In 1699, Nicolas Fatio de Duillier even suggested using a tracking mechanism which could pivot to follow the Sun. Applications of solar energy in agriculture aside from growing crops include pumping water, drying crops, brooding chicks and drying chicken manure. More recently the technology has been embraced by vinters, who use the energy generated by solar panels to power grape presses.

Question: During the Little Ice Age, what did English and French farmers use to increase collection of solar energy?
Ans: fruit walls

Input: Myanmar
Until 2005, the United Nations General Assembly annually adopted a detailed resolution about the situation in Myanmar by consensus. But in 2006 a divided United Nations General Assembly voted through a resolution that strongly called upon the government of Myanmar to end its systematic violations of human rights. In January 2007, Russia and China vetoed a draft resolution before the United Nations Security Council calling on the government of Myanmar to respect human rights and begin a democratic transition. South Africa also voted against the resolution.

What other countries were in disagreement with the United Nations decision on Burma ?
Output:
South Africa