Problem: Pope John XXIII:

The 50th anniversary of his death was celebrated on 3 June 2013 by Pope Francis, who visited his tomb and prayed there, then addressing the gathered crowd and spoke about the late pope. The people that gathered there at the tomb were from Bergamo, the province where the late pope came from. A month later, on 5 July 2013, Francis approved Pope John XXIII for canonization, along with Pope John Paul II without the traditional second miracle required. Instead, Francis based this decision on John XXIII's merits for the Second Vatican Council. On Sunday, 27 April 2014, John XXIII and Pope John Paul II were declared saints on Divine Mercy Sunday.

Where were the people gathered at his tomb from?
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A: Bergamo

Problem: Aircraft carrier:

The constraints of constructing a flight deck affect the role of a given carrier strongly, as they influence the weight, type, and configuration of the aircraft that may be launched. For example, assisted launch mechanisms are used primarily for heavy aircraft, especially those loaded with air-to-ground weapons. CATOBAR is most commonly used on USN supercarriers as it allows the deployment of heavy jets with full loadouts, especially on ground-attack missions. STOVL is used by other navies because it is cheaper to operate and still provides good deployment capability for fighter aircraft.

Why is STOVL not used by other navies?
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A: unanswerable

Problem: Age of Enlightenment:

The Enlightenment known in French as the Siecle des Lumieres, the Century of Enlightenment, and in German as the Aufklarung was a philosophical movement which dominated the world of ideas in Europe in the 18th century. The Enlightenment included a range of ideas centered on reason as the primary source of authority and legitimacy, and came to advance ideals such as liberty, progress, tolerance, fraternity, constitutional government and ending the abuses of the church and state. In France, the central doctrines of the Lumieres were individual liberty and religious tolerance, in opposition to the principle of absolute monarchy and the fixed dogmas of the Roman Catholic Church. The Enlightenment was marked by increasing empiricism, scientific rigor, and reductionism, along with increased questioning of religious orthodoxy.

In France, what were the central doctrines of the Lumieres?
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A: individual liberty and religious tolerance

Problem: Botany:

Epigenetic changes in eukaryotic biology serve to regulate the process of cellular differentiation. During morphogenesis, totipotent stem cells become the various pluripotent cell lines of the embryo, which in turn become fully differentiated cells. A single fertilized egg cell, the zygote, gives rise to the many different plant cell types including parenchyma, xylem vessel elements, phloem sieve tubes, guard cells of the epidermis, etc. as it continues to divide. The process results from the epigenetic activation of some genes and inhibition of others.

What process causes changes in plant cells?
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A:
Epigenetic changes