Input: Read this: The 1469 marriage of Isabella I of Castile and Ferdinand II of Aragon and the 1479 death of John II of Aragon led to the creation of modern-day Spain. In 1492, Granada was captured from the Moors, thereby completing the Reconquista. Portugal had during the 15th century particularly under Henry the Navigator gradually explored the coast of Africa, and in 1498, Vasco da Gama found the sea route to India. The Spanish monarchs met the Portuguese challenge by financing the expedition of Christopher Columbus to find a western sea route to India, leading to the discovery of the Americas in 1492.
Question: Which explorer ignored a sea-route to India?

Output: unanswerable

QUES: Estonia's constitution guarantees freedom of religion, separation of church and state, and individual rights to privacy of belief and religion. According to the Dentsu Communication Institute Inc, Estonia is one of the least religious countries in the world, with 75.7% of the population claiming to be irreligious. The Eurobarometer Poll 2005 found that only 16% of Estonians profess a belief in a god, the lowest belief of all countries studied (EU study). According to the Lutheran World Federation, the historic Lutheran denomination remains a large presence with 180,000 registered members.

What percentage of Estonians claim no religion?
What is the answer?
ANS: 75.7%

QUES: Persistent infections occur because the body is unable to clear the organism after the initial infection. Persistent infections are characterized by the continual presence of the infectious organism, often as latent infection with occasional recurrent relapses of active infection. There are some viruses that can maintain a persistent infection by infecting different cells of the body. Some viruses once acquired never leave the body. A typical example is the herpes virus, which tends to hide in nerves and become reactivated when specific circumstances arise.
What never leave the body when acquired?

ANS: Some viruses

Insects were among the earliest terrestrial herbivores and acted as major selection agents on plants. Plants evolved chemical defenses against this herbivory and the insects, in turn, evolved mechanisms to deal with plant toxins. Many insects make use of these toxins to protect themselves from their predators. Such insects often advertise their toxicity using warning colors. This successful evolutionary pattern has also been used by mimics. Over time, this has led to complex groups of coevolved species. Conversely, some interactions between plants and insects, like pollination, are beneficial to both organisms. Coevolution has led to the development of very specific mutualisms in such systems.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Insects are considered terrestrial what?
Ah, so.. herbivores

Question: Swaziland's most well-known cultural event is the annual Umhlanga Reed Dance. In the eight-day ceremony, girls cut reeds and present them to the queen mother and then dance. (There is no formal competition.) It is done in late August or early September. Only childless, unmarried girls can take part. The aims of the ceremony are to preserve girls' chastity, provide tribute labour for the Queen mother, and to encourage solidarity by working together. The royal family appoints a commoner maiden to be "induna" (captain) of the girls and she announces over the radio the dates of the ceremony. She will be an expert dancer and knowledgeable on royal protocol. One of the King's daughters will be her counterpart.
Try to answer this question if possible: What is Swazilands oldest cultural event?
Answer: unanswerable

Question: On runways, green lights indicate the beginning of the runway for landing, while red lights indicate the end of the runway. Runway edge lighting consists of white lights spaced out on both sides of the runway, indicating the edge. Some airports have more complicated lighting on the runways including lights that run down the centerline of the runway and lights that help indicate the approach (an approach lighting system, or ALS). Low-traffic airports may use pilot controlled lighting to save electricity and staffing costs.
Try to answer this question if possible: What does pilot controlled lighting consist of?
Answer:
unanswerable