input question: Extract the answer to the question from the following context. Question: What was done to the Code of Canon Law to make it impossible for there to be lay cardinals? Context: At various times, there have been cardinals who had only received first tonsure and minor orders but not yet been ordained as deacons or priests. Though clerics, they were inaccurately called "lay cardinals" and were permitted to marry. Teodolfo Mertel was among the last of the lay cardinals. When he died in 1899 he was the last surviving cardinal who was not at least ordained a priest. With the revision of the Code of Canon Law promulgated in 1917 by Pope Benedict XV, only those who are already priests or bishops may be appointed cardinals. Since the time of Pope John XXIII a priest who is appointed a cardinal must be consecrated a bishop, unless he obtains a dispensation.???
output answer: revision

Extract the answer to the question from the following context. Question: How does the scientists work compare to other famous works? Context: The biologist Lynn Margulis, famous for her work on endosymbiosis, contends that symbiosis is a major driving force behind evolution. She considers Darwin's notion of evolution, driven by competition, to be incomplete and claims that evolution is strongly based on co-operation, interaction, and mutual dependence among organisms. According to Margulis and Dorion Sagan, "Life did not take over the globe by combat, but by networking."
----
Answer: symbiosis is a major driving force behind evolution

Q: Extract the answer to the question from the following context. Question: What theory is crucial for quantum dot display? Context: The structure of QD-LEDs used for the electrical-excitation scheme is similar to basic design of OLEDs. A layer of quantum dots is sandwiched between layers of electron-transporting and hole-transporting materials. An applied electric field causes electrons and holes to move into the quantum dot layer and recombine forming an exciton that excites a QD. This scheme is commonly studied for quantum dot display. The tunability of emission wavelengths and narrow bandwidth is also beneficial as excitation sources for fluorescence imaging. Fluorescence near-field scanning optical microscopy (NSOM) utilizing an integrated QD-LED has been demonstrated.
A: electrical-excitation scheme

Question: Extract the answer to the question from the following context. Question: What country does Honduras border? Context: About five percent of the population are of full-blooded indigenous descent, but upwards to eighty percent more or the majority of Hondurans are mestizo or part-indigenous with European admixture, and about ten percent are of indigenous or African descent. The main concentration of indigenous in Honduras are in the rural westernmost areas facing Guatemala and to the Caribbean Sea coastline, as well on the Nicaraguan border. The majority of indigenous people are Lencas, Miskitos to the east, Mayans, Pech, Sumos, and Tolupan.
Answer: Guatemala

[Q]: Extract the answer to the question from the following context. Question: The forms of thought of this thing that is difficult to determine are? Context: Early history of Shaivism is difficult to determine. However, the Svetasvatara Upanishad (400 200 BCE) is considered to be the earliest textual exposition of a systematic philosophy of Shaivism. Shaivism is represented by various philosophical schools, including non-dualist (abheda), dualist (bheda), and non-dualist-with-dualist (bhedabheda) perspectives. Vidyaranya in his works mentions three major schools of Shaiva thought Pashupata Shaivism, Shaiva Siddhanta and Pratyabhijna (Kashmir Shaivism).
****
[A]: Pashupata Shaivism, Shaiva Siddhanta and Pratyabhijna

Problem: Given the question: Extract the answer to the question from the following context. Question: What kind of compensation did students receive for keeping the grounds tidy and fixing things for their places of education? Context: 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.
++++++++++++++++++++++++++++++++
The answer is:
unpaid