Problem: Frédéric Chopin:

In 1817 the Saxon Palace was requisitioned by Warsaw's Russian governor for military use, and the Warsaw Lyceum was reestablished in the Kazimierz Palace (today the rectorate of Warsaw University). Fryderyk and his family moved to a building, which still survives, adjacent to the Kazimierz Palace. During this period, Fryderyk was sometimes invited to the Belweder Palace as playmate to the son of the ruler of Russian Poland, Grand Duke Constantine; he played the piano for the Duke and composed a march for him. Julian Ursyn Niemcewicz, in his dramatic eclogue, "Nasze Przebiegi" ("Our Discourses", 1818), attested to "little Chopin's" popularity.

What building was Frédéric's new home adjacent to?
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A: Kazimierz Palace


Problem: Nonetheless, within a few years of his death, Gregory of Nazianzus called him the "Pillar of the Church". His writings were well regarded by all Church fathers who followed, in both the West and the East, who noted their rich devotion to the Word-become-man, great pastoral concern, and profound interest in monasticism. Athanasius is counted as one of the four great Eastern Doctors of the Church in the Roman Catholic Church. In the Eastern Orthodox Church, he is labeled the "Father of Orthodoxy". Some Protestants label him "Father of the Canon". Athanasius is venerated as a Christian saint, whose feast day is 2 May in Western Christianity, 15 May in the Coptic Orthodox Church, and 18 January in the other Eastern Orthodox Churches. He is venerated by the Oriental and Eastern Orthodox Churches, the Roman Catholic Church, the Lutherans, and the Anglican Communion.
How does the Eastern Orthodox Church refer to him?
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Answer: Father of Orthodoxy


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
On October 28, 2015, IBM announced its acquisition of digital assets from The Weather Company—a holding company of Bain Capital, The Blackstone Group and NBCUniversal which owns The Weather Channel, including its weather data platforms (such as Weather Services International), websites (Weather.com and Weather Underground) and mobile apps. The acquisition seeks to use Watson for weather analytics and predictions. The acquisition does not include The Weather Channel itself, which will enter into a long-term licensing agreement with IBM for use of its data. The sale closed on January 29, 2016 
Why will The Weather Channel enter into a long-term agreement with NBCUniversal?
A: unanswerable


Context and question: Typical use of the various technologies described above include calling or conferencing on a one-on-one, one-to-many or many-to-many basis for personal, business, educational, deaf Video Relay Service and tele-medical, diagnostic and rehabilitative use or services. New services utilizing videocalling and videoconferencing, such as teachers and psychologists conducting online sessions, personal videocalls to inmates incarcerated in penitentiaries, and videoconferencing to resolve airline engineering issues at maintenance facilities, are being created or evolving on an ongoing basis.
How often is the def Video Relay Service evolving?
Answer: unanswerable


Question: Red is the color at the end of the spectrum of visible light next to orange and opposite violet. Red color has a predominant light wavelength of roughly 620–740 nanometres. Red is one of the additive primary colors of visible light, along with green and blue, which in Red Green Blue (RGB) color systems are combined to create all the colors on a computer monitor or television screen. Red is also one of the subtractive primary colors, along with yellow and blue, of the RYB color space and traditional color wheel used by painters and artists.
Is there an answer to this question: What has a predominant light wavelength of 640-720 nanometres?

Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Some of the best examples of later Islamic mosaics were produced in Moorish Spain. The golden mosaics in the mihrab and the central dome of the Great Mosque in Corduba have a decidedly Byzantine character. They were made between 965 and 970 by local craftsmen, supervised by a master mosaicist from Constantinople, who was sent by the Byzantine Emperor to the Umayyad Caliph of Spain. The decoration is composed of colorful floral arabesques and wide bands of Arab calligraphy. The mosaics were purported to evoke the glamour of the Great Mosque in Damascus, which was lost for the Umayyad family.
Who sent the master mosaicist to Spain?
A:
the Byzantine Emperor