Problem: After the end of hostilities, a period of growth and expansion started for the city. In 1853 a stagecoach bus line was established joining Montevideo with the newly formed settlement of Unión and the first natural gas street lights were inaugurated.[citation needed] From 1854 to 1861 the first public sanitation facilities were constructed. In 1856 the Teatro Solís was inaugurated, 15 years after the beginning of its construction. By Decree, on December 1861 the areas of Aguada and Cordón were incorporated to the growing Ciudad Nueva (New City). In 1866, an underwater telegraph line connected the city with Buenos Aires. The statue of Peace, La Paz, was erected on a column in Plaza Cagancha and the building of the Postal Service as well as the bridge of Paso Molino were inaugurated in 1867.
Between what years were the first natural gas street lights constructed?
The answer is the following: 1854 to 1861

Problem: The adoption of the mother of Jesus as a virtual goddess may represent a reintroduction of aspects of the worship of Isis. "When looking at images of the Egyptian goddess Isis and those of the Virgin Mary, one may initially observe iconographic similarities. These parallels have led many scholars to suggest that there is a distinct iconographic relationship between Isis and Mary. In fact, some scholars have gone even further, and have suggested, on the basis of this relationship, a direct link between the cult of Mary and that of Isis." 
Which Egyptian goddess do some scholars ascribe similarities to?
The answer is the following: Isis

Problem: One wave of the population boom ended abruptly in the mid-1980s, as oil prices fell precipitously. The space industry also suffered in 1986 after the Space Shuttle Challenger disintegrated shortly after launch. There was a cutback in some activities for a period. In the late 1980s, the city's economy suffered from the nationwide recession. After the early 1990s recession, Houston made efforts to diversify its economy by focusing on aerospace and health care/biotechnology, and reduced its dependence on the petroleum industry. Since the increase of oil prices in the 2000s, the petroleum industry has again increased its share of the local economy.
In the 1990's, what is something Houston did to try to diversify it's economy?
The answer is the following: reduced its dependence on the petroleum industry

Problem: PlayStation 3's initial production cost is estimated by iSuppli to have been US$805.85 for the 20 GB model and US$840.35 for the 60 GB model. However, they were priced at US$499 and US$599 respectively, meaning that units may have been sold at an estimated loss of $306 or $241 depending on model, if the cost estimates were correct, and thus may have contributed to Sony's games division posting an operating loss of ¥232.3 billion (US$1.97 billion) in the fiscal year ending March 2007. In April 2007, soon after these results were published, Ken Kutaragi, President of Sony Computer Entertainment, announced plans to retire. Various news agencies, including The Times and The Wall Street Journal reported that this was due to poor sales, while SCEI maintains that Kutaragi had been planning his retirement for six months prior to the announcement.
Assuming iSuppli got the numbers right, how much of a loss did Sony take for every 20 GB PS3 sold in the U.S.?
The answer is the following:
$306