Problem: In 1872, Russian Alexander Lodygin invented an incandescent light bulb and obtained a Russian patent in 1874. He used as a burner two carbon rods of diminished section in a glass receiver, hermetically sealed, and filled with nitrogen, electrically arranged so that the current could be passed to the second carbon when the first had been consumed. Later he lived in the USA, changed his name to Alexander de Lodyguine and applied and obtained patents for incandescent lamps having chromium, iridium, rhodium, ruthenium, osmium, molybdenum and tungsten filaments, and a bulb using a molybdenum filament was demonstrated at the world fair of 1900 in Paris.
When did Lodygin invent his first lamp?
The answer is the following: 1872

Problem: One boarding house, College, is reserved for seventy King's Scholars, who attend Eton on scholarships provided by the original foundation and awarded by examination each year; King's Scholars pay up to 90% of full fees, depending on their means. Of the other pupils, up to a third receive some kind of bursary or scholarship. The name "King's Scholars" is because the school was founded by King Henry VI in 1440. The original School consisted of the seventy Scholars (together with some Commensals) and the Scholars were educated and boarded at the foundation's expense.
Where do "King's Scholars" get their name?
The answer is the following: the school was founded by King Henry VI

Problem: Mary resided in "her own house"[Lk.1:56] in Nazareth in Galilee, possibly with her parents, and during her betrothal — the first stage of a Jewish marriage — the angel Gabriel announced to her that she was to be the mother of the promised Messiah by conceiving him through the Holy Spirit, and she responded, "I am the handmaid of the Lord. Let it be done unto me according to your word." After a number of months, when Joseph was told of her conception in a dream by "an angel of the Lord", he planned to divorce her; but the angel told him to not hesitate to take her as his wife, which Joseph did, thereby formally completing the wedding rites.[Mt 1:18-25]
What is the first stage of Jewish marriage?
The answer is the following: betrothal

Problem: Hurling and football are the most popular spectator sports in the city. Hurling has a strong identity with city and county – with Cork winning 30 All-Ireland Championships. Gaelic football is also popular, and Cork has won 7 All-Ireland Senior Football Championship titles. There are many Gaelic Athletic Association clubs in Cork City, including Blackrock National Hurling Club, St. Finbarr's, Glen Rovers, Na Piarsaigh and Nemo Rangers. The main public venues are Páirc Uí Chaoimh and Páirc Uí Rinn (named after the noted Glen Rovers player Christy Ring). Camogie (hurling for ladies) and women's gaelic football are increasing in popularity.
How many All-Ireland Senior Football Championship titles have been won by Cork?
The answer is the following:
7