Extract the answer to the question from the following context. Question: what is the second period in time mentioned? Context: In 1991, US President George H. W. Bush awarded Hayek the Presidential Medal of Freedom, one of the two highest civilian awards in the United States, for a "lifetime of looking beyond the horizon". Hayek died on 23 March 1992 in Freiburg, Germany, and was buried on 4 April in the Neustift am Walde cemetery in the northern outskirts of Vienna according to the Catholic rite. In 2011, his article The Use of Knowledge in Society was selected as one of the top 20 articles published in the American Economic Review during its first 100 years.
Ans: 23 March 1992

Extract the answer to the question from the following context. Question: The lines that aren't below ground or ground level are what? Context: The Delhi Metro is a rapid transit system serving New Delhi, Delhi, Gurgaon, Faridabad, Noida, and Ghaziabad in the National Capital Region of India. Delhi Metro is the world's 12th largest metro system in terms of length. Delhi Metro was India's first modern public transportation system, which had revolutionised travel by providing a fast, reliable, safe, and comfortable means of transport. The network consists of six lines with a total length of 189.63 kilometres (117.83 miles) with 142 stations, of which 35 are underground, five are at-grade, and the remainder are elevated. All stations have escalators, elevators, and tactile tiles to guide the visually impaired from station entrances to trains. It has a combination of elevated, at-grade, and underground lines, and uses both broad gauge and standard gauge rolling stock. Four types of rolling stock are used: Mitsubishi-ROTEM Broad gauge, Bombardier MOVIA, Mitsubishi-ROTEM Standard gauge, and CAF Beasain Standard gauge.
Ans: elevated

Extract the answer to the question from the following context. Question: What is a struggle in this study? Context: Cross-cultural study of comics is complicated by the great difference in meaning and scope of the words for "comics" in different languages. The French term for comics, bandes dessinées ("drawn strip") emphasizes the juxtaposition of drawn images as a defining factor, which can imply the exclusion of even photographic comics. The term manga is used in Japanese to indicate all forms of comics, cartooning, and caricature.
Ans: difference in meaning and scope of the words for "comics" in different languages

Extract the answer to the question from the following context. Question: What is geothermal energy? Context: Solar technologies are broadly characterized as either passive or active depending on the way they capture, convert and distribute sunlight and enable solar energy to be harnessed at different levels around the world, mostly depending on distance from the equator. Although solar energy refers primarily to the use of solar radiation for practical ends, all renewable energies, other than geothermal and tidal, derive their energy from the Sun in a direct or indirect way.
