Q: Extract the answer to the question from the following context. Question: What produces hydrogen in power transformers? Context: From all the fault gases formed in power transformers, hydrogen is the most common and is generated under most fault conditions; thus, formation of hydrogen is an early indication of serious problems in the transformer's life cycle.
A: serious problems in the transformer

Q: Extract the answer to the question from the following context. Question: What areas did Buddhism reach and become interested in? Context: The gradual spread of Buddhism into adjacent areas meant that it came into contact with new ethnical groups. During this period Buddhism was exposed to a variety of influences, from Persian and Greek civilization, to changing trends in non-Buddhist Indian religions—themselves influenced by Buddhism. Striking examples of this syncretistic development can be seen in the emergence of Greek-speaking Buddhist monarchs in the Indo-Greek Kingdom, and in the development of the Greco-Buddhist art of Gandhāra. A Greek king, Menander, has even been immortalized in the Buddhist canon.
A: Persian and Greek civilization

Q: Extract the answer to the question from the following context. Question: Where was lack of peace most concerning? Context: With the abatement of persecution, St. Jerome acknowledged the Empire as a bulwark against evil but insisted that "imperial honours" were contrary to Christian teaching. His was an authoritative but minority voice: most Christians showed no qualms in the veneration of even "pagan" emperors. The peace of the emperors was the peace of God; as far as the Church was concerned, internal dissent and doctrinal schism were a far greater problem. The solution came from a hitherto unlikely source: as pontifex maximus Constantine I favoured the "Catholic Church of the Christians" against the Donatists because:
A: internal

Q: Extract the answer to the question from the following context. Question: Which of the following is not a trait of paraffin wax: inexpensive, high specific heat capacity, or readily available? Context: Phase change materials such as paraffin wax and Glauber's salt are another thermal storage media. These materials are inexpensive, readily available, and can deliver domestically useful temperatures (approximately 64 °C or 147 °F). The "Dover House" (in Dover, Massachusetts) was the first to use a Glauber's salt heating system, in 1948. Solar energy can also be stored at high temperatures using molten salts. Salts are an effective storage medium because they are low-cost, have a high specific heat capacity and can deliver heat at temperatures compatible with conventional power systems. The Solar Two used this method of energy storage, allowing it to store 1.44 terajoules (400,000 kWh) in its 68 cubic metres storage tank with an annual storage efficiency of about 99%.
A:
high specific heat capacity