Input: Read this: Viviparous mammals are in the subclass Theria; those living today are in the marsupial and placental infraclasses. A marsupial has a short gestation period, typically shorter than its estrous cycle, and gives birth to an undeveloped newborn that then undergoes further development; in many species, this takes place within a pouch-like sac, the marsupium, located in the front of the mother's abdomen. This is the plesyomorphic condition among viviparous mammals; the presence of epipubic bones in all non-placental mammals prevents the expansion of the torso needed for full pregnancy. Even non-placental eutherians probably reproduced this way.
Question: Where on the mother are the epipubic bones located?

Output: unanswerable

QUES: Current circulating in one antenna generally induces a voltage across the feedpoint of nearby antennas or antenna elements. The mathematics presented below are useful in analyzing the electrical behaviour of antenna arrays, where the properties of the individual array elements (such as half wave dipoles) are already known. If those elements were widely separated and driven in a certain amplitude and phase, then each would act independently as that element is known to. However, because of the mutual interaction between their electric and magnetic fields due to proximity, the currents in each element are not simply a function of the applied voltage (according to its driving point impedance), but depend on the currents in the other nearby elements. Note that this now is a near field phenomenon which could not be properly accounted for using the Friis transmission equation for instance.

What cause mutual interactions between the elements electric and magnetic fields?
What is the answer?
ANS: proximity

QUES: The number of species of flowering plants is estimated to be in the range of 250,000 to 400,000. This compares to around 12,000 species of moss or 11,000 species of pteridophytes, showing that the flowering plants are much more diverse. The number of families in APG (1998) was 462. In APG II (2003) it is not settled; at maximum it is 457, but within this number there are 55 optional segregates, so that the minimum number of families in this system is 402. In APG III (2009) there are 415 families.
What are the minimum number of species of moss in the APG system?

ANS: unanswerable

This season also saw the launch of the American Idol Songwriter contest which allows fans to vote for the "coronation song". Thousands of recordings of original songs were submitted by songwriters, and 20 entries selected for the public vote. The winning song, "This Is My Now", was performed by both finalists during the finale and released by Sparks on May 24, 2007.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is the first song released by Jordin Sparks after winning American Idol?
Ah, so.. This Is My Now

Question: The Korean War was a conflict between the United States and its United Nations allies and the communist powers under influence of the Soviet Union (also a UN member nation) and the People's Republic of China (which later also gained UN membership). The principal combatants were North and South Korea. Principal allies of South Korea included the United States, Canada, Australia, the United Kingdom, although many other nations sent troops under the aegis of the United Nations. Allies of North Korea included the People's Republic of China, which supplied military forces, and the Soviet Union, which supplied combat advisors and aircraft pilots, as well as arms, for the Chinese and North Korean troops.
Try to answer this question if possible: What country supplied troops to North Korea during the Korean War?
Answer: the People's Republic of China

Context and question: Cardinal bishops (cardinals of the episcopal order) are among the most senior prelates of the Catholic Church. Though in modern times most cardinals are also bishops, the term "cardinal bishop" only refers to the cardinals who are titular bishops of one of the "suburbicarian" sees.
What is a cardinal bishop?
Answer:
cardinals of the episcopal order