Question: In Europe during the Medieval period, guilds were formed by craftsmen to organise their trades and written contracts have survived, particularly in relation to ecclesiastical buildings. The role of architect was usually one with that of master mason, or Magister lathomorum as they are sometimes described in contemporary documents.
Is there an answer to this question: What was the least important thing the contracts were had to do with?

Answer: unanswerable

Question: Niels Bohr introduced the first quantized model of the atom in 1913, in an attempt to overcome a major shortcoming of Rutherford's classical model. In classical electrodynamics, a charge moving in a circle should radiate electromagnetic radiation. If that charge were to be an electron orbiting a nucleus, the radiation would cause it to lose energy and spiral down into the nucleus. Bohr solved this paradox with explicit reference to Planck's work: an electron in a Bohr atom could only have certain defined energies En
Is there an answer to this question: What was predicted to happen to a nucleus-orbiting electron under Rutherford's model?

Answer: the radiation would cause it to lose energy and spiral down into the nucleus

Question: The first landing was followed by another, precision landing on Apollo 12 in November 1969. NASA had achieved its first landing goal with enough Apollo spacecraft and Saturn V launchers left for eight follow-on lunar landings through Apollo 20, conducting extended-endurance missions and transporting the landing crews in Lunar Roving Vehicles on the last five. They also planned an Apollo Applications Program to develop a longer-duration Earth orbital workshop (later named Skylab) to be constructed in orbit from a spent S-IVB upper stage, using several launches of the smaller Saturn IB launch vehicle. But planners soon decided this could be done more efficiently by using the two live stages of a Saturn V to launch the workshop pre-fabricated from an S-IVB (which was also the Saturn V third stage), which immediately removed Apollo 20. Belt-tightening budget cuts soon led NASA to cut Apollo 18 and 19 as well, but keep three extended/Lunar Rover missions. Apollo 13 encountered an in-flight spacecraft failure and had to abort its lunar landing in April 1970, returning its crew safely but temporarily grounding the program again. It resumed with four successful landings on Apollo 14 (February 1971), Apollo 15 (July 1971), Apollo 16 (April 1972), and Apollo 17 (December 1972).
Is there an answer to this question: Apollo 17 landed on the Moon on which date?

Answer: December 1972

Question: The Armed Forces are today funded by approximately $20.1 billion annually and are presently ranked 74th in size compared to the world's other armed forces by number of total personnel, and 58th in terms of active personnel, standing at a strength of roughly 68,000, plus 27,000 reservists, 5000 Rangers, and 19,000 supplementary reserves, bringing the total force to approximately 119,000. The number of primary reserve personnel is expected to go up to 30,000 by 2020, and the number of active to at least 70,000. In addition, 5000 rangers and 19,000 supplementary personnel will be serving. If this happens the total strength would be around 124,000. These individuals serve on numerous CF bases located in all regions of the country, and are governed by the Queen's Regulations and Orders and the National Defence Act.
Is there an answer to this question: What is Today's annual cost of the Canadian Forces?

Answer:
approximately $20.1 billion