Input: Read this: External evidence is evidence of each physical witness, its date, source, and relationship to other known witnesses. Critics will often prefer the readings supported by the oldest witnesses. Since errors tend to accumulate, older manuscripts should have fewer errors. Readings supported by a majority of witnesses are also usually preferred, since these are less likely to reflect accidents or individual biases. For the same reasons, the most geographically diverse witnesses are preferred. Some manuscripts show evidence that particular care was taken in their composition, for example, by including alternative readings in their margins, demonstrating that more than one prior copy (exemplar) was consulted in producing the current one. Other factors being equal, these are the best witnesses. The role of the textual critic is necessary when these basic criteria are in conflict. For instance, there will typically be fewer early copies, and a larger number of later copies. The textual critic will attempt to balance these criteria, to determine the original text.
Question: Why do critics prefer geographically similar witnesses?

Output: unanswerable

Input: Read this: The closest links of the U.S. IC to other foreign intelligence agencies are to Anglophone countries: Australia, Canada, New Zealand, and the United Kingdom. There is a special communications marking that signals that intelligence-related messages can be shared with these four countries. An indication of the United States' close operational cooperation is the creation of a new message distribution label within the main U.S. military communications network. Previously, the marking of NOFORN (i.e., No Foreign Nationals) required the originator to specify which, if any, non-U.S. countries could receive the information. A new handling caveat, USA/AUS/CAN/GBR/NZL Five Eyes, used primarily on intelligence messages, gives an easier way to indicate that the material can be shared with Australia, Canada, United Kingdom, and New Zealand.
Question: Which four countries can share communications with the U.S. IC?

Output: Australia, Canada, New Zealand, and the United Kingdom

Input: Read this: The names for the nation of Greece and the Greek people differ from the names used in other languages, locations and cultures. Although the Greeks call the country Hellas or Ellada (Greek: or ) and its official name is the Hellenic Republic, in English it is referred to as Greece, which comes from the Latin term Graecia as used by the Romans, which literally means 'the land of the Greeks', and derives from the Greek name . However, the name Hellas is sometimes used in English as well.
Question: What is one of the names the Greeks call their country?

Output: Hellas

Input: Read this: A P-N junction can convert absorbed light energy into a proportional electric current. The same process is reversed here (i.e. the P-N junction emits light when electrical energy is applied to it). This phenomenon is generally called electroluminescence, which can be defined as the emission of light from a semi-conductor under the influence of an electric field. The charge carriers recombine in a forward-biased P-N junction as the electrons cross from the N-region and recombine with the holes existing in the P-region. Free electrons are in the conduction band of energy levels, while holes are in the valence energy band. Thus the energy level of the holes will be lesser than the energy levels of the electrons. Some portion of the energy must be dissipated in order to recombine the electrons and the holes. This energy is emitted in the form of heat and light.
Question: Where are the free electrons located in the production of electroluminescence?

Output:
the conduction band