Here is a question about this article: The country is a significant agricultural producer within the EU. Greece has the largest economy in the Balkans and is as an important regional investor. Greece was the largest foreign investor in Albania in 2013, the third in Bulgaria, in the top-three in Romania and Serbia and the most important trading partner and largest foreign investor in the former Yugoslav Republic of Macedonia. The Greek telecommunications company OTE has become a strong investor in former Yugoslavia and in other Balkan countries.
What is the answer to this question: Greece has the largest what in the Balkans?
****
So... economy

Here is a question about this article: The company aims to reduce its external environmental impact through energy-efficient evolution of products, and also reduce its direct operational impact through energy-efficiency programs. Internal energy-efficiency programs reportedly save the company more than $3 million annually in energy-cost savings. The largest component of the company's internal energy-efficiency savings comes through PC power management: the company expects to save $1.8 million in energy costs through using specialized energy-management software on a network of 50,000 PCs.
What is the answer to this question: What is the largest contributor to Dell's energy efficiency savings?
****
So... PC power management

Here is a question about this article: There are also some extremely complex characters which have understandably become rather rare. According to Joel Bellassen (1989), the most complex Chinese character is / (U+2A6A5) zhe listen (helpinfo), meaning "verbose" and containing sixty-four strokes; this character fell from use around the 5th century. It might be argued, however, that while containing the most strokes, it is not necessarily the most complex character (in terms of difficulty), as it simply requires writing the same sixteen-stroke character long (lit. "dragon") four times in the space for one. Another 64-stroke character is / (U+2053B) zheng composed of xing/xing (lit. "flourish") four times.
What is the answer to this question: What is the most complex Chinese character?
****
So...
zhe