Question: From a military standpoint, lighting is a critical part of the battlefield conditions. Shadows are good places to hide, while bright areas are more exposed. It is often beneficial to fight with the Sun or other light source behind you, giving your enemy disturbing visual glare and partially hiding your own movements in backlight. If natural light is not present searchlights and flares can be used. However the use of light may disclose your own hidden position and modern warfare have seen increased use of night vision through the use of infrared cameras and image intensifiers.
Is there an answer to this question: The use of what may disclose your own hidden position on a battlefield? 

Answer: light


Question: The practice of labelling the infringement of exclusive rights in creative works as "piracy" predates statutory copyright law. Prior to the Statute of Anne in 1710, the Stationers' Company of London in 1557, received a Royal Charter giving the company a monopoly on publication and tasking it with enforcing the charter. Those who violated the charter were labelled pirates as early as 1603. The term "piracy" has been used to refer to the unauthorized copying, distribution and selling of works in copyright. Article 12 of the 1886 Berne Convention for the Protection of Literary and Artistic Works uses the term "piracy" in relation to copyright infringement, stating "Pirated works may be seized on importation into those countries of the Union where the original work enjoys legal protection." Article 61 of the 1994 Agreement on Trade-Related Aspects of Intellectual Property Rights (TRIPs) requires criminal procedures and penalties in cases of "willful trademark counterfeiting or copyright piracy on a commercial scale." Piracy traditionally refers to acts of copyright infringement intentionally committed for financial gain, though more recently, copyright holders have described online copyright infringement, particularly in relation to peer-to-peer file sharing networks, as "piracy."
Is there an answer to this question: Piracy has been less recently described online in relation to what?

Answer: unanswerable


Question: The franchise was first created in 1997 as a series of virtual pets, akin to—and influenced in style by—the contemporary Tamagotchi or nano Giga Pet toys. The creatures were first designed to look cute and iconic even on the devices' small screens; later developments had them created with a harder-edged style influenced by American comics. The franchise gained momentum with its first anime incarnation, Digimon Adventure, and an early video game, Digimon World, both released in 1999. Several seasons of the anime and films based on them have aired, and the video game series has expanded into genres such as role-playing, racing, fighting, and MMORPGs. Other media forms have also been released.
Is there an answer to this question: What is aired for several seasons based on the films?

Answer: unanswerable


Question: During the Tokugawa shogunate, samurai increasingly became courtiers, bureaucrats, and administrators rather than warriors. With no warfare since the early 17th century, samurai gradually lost their military function during the Tokugawa era (also called the Edo period). By the end of the Tokugawa era, samurai were aristocratic bureaucrats for the daimyo, with their daisho, the paired long and short swords of the samurai (cf. katana and wakizashi) becoming more of a symbolic emblem of power rather than a weapon used in daily life. They still had the legal right to cut down any commoner who did not show proper respect kiri-sute gomen (斬り捨て御免?), but to what extent this right was used is unknown. When the central government forced daimyos to cut the size of their armies, unemployed rōnin became a social problem.
Is there an answer to this question: When had samurai last been used in battle?

Answer:
the early 17th century