Problem: From the 1950s on, the students were also used for unpaid work at schools, where they cleaned and performed repairs. This practice has continued in the Russian Federation, where up to 21 days of the summer holidays is sometimes set aside for school works. By law, this is only allowed as part of specialized occupational training and with the students' and parents' permission, but those provisions are widely ignored. In 2012 there was an accident near city of Nalchik where a car killed several pupils cleaning up a highway shoulder during their "holiday work" as well as their teacher who was supervising them.
For Russian student workers how many summer days were devoted to work?
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Answer: 21 days

Problem: On 11 October 1962, the first session of the Second Vatican Council was held in the Vatican. He gave the Gaudet Mater Ecclesia speech, which served as the opening address for the council. The day was basically electing members for several council commissions that would work on the issues presented in the council. On that same night following the conclusion of the first session, the people in Saint Peter's Square chanted and yelled with the sole objective of getting John XXIII to appear at the window to address them.
What did the public want Gaudet Mater Ecclesia to do when he appeared at the window?
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Answer: unanswerable

Problem: Neptune's orbit has a profound impact on the region directly beyond it, known as the Kuiper belt. The Kuiper belt is a ring of small icy worlds, similar to the asteroid belt but far larger, extending from Neptune's orbit at 30 AU out to about 55 AU from the Sun. Much in the same way that Jupiter's gravity dominates the asteroid belt, shaping its structure, so Neptune's gravity dominates the Kuiper belt. Over the age of the Solar System, certain regions of the Kuiper belt became destabilised by Neptune's gravity, creating gaps in the Kuiper belt's structure. The region between 40 and 42 AU is an example.
What did Jupiter's gravity do to Kuiper belt?
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Answer:
unanswerable