Problem: Given the question: I know that the answer to the question "Why has it been harder for AC artists to put out Top 40 hits?" is in "Mainstream AC itself has evolved in a similar fashion over the years; traditional AC artists like Barbra Streisand, the Carpenters, Dionne Warwick, Barry Manilow, John Denver, and Olivia Newton-John found it harder to have major Top 40 hits as the 1980s wore on, and due to the influence of MTV, artists who were staples of the Contemporary Hit Radio format, such as Richard Marx, Michael Jackson, Bonnie Tyler, George Michael, Phil Collins, and Laura Branigan began crossing over to the AC charts with greater frequency. Collins has been described by AllMusic as "one of the most successful pop and adult contemporary singers of the '80s and beyond". However, with the combination of MTV and AC radio, adult contemporary appeared harder to define as a genre, with established soft-rock artists of the past still charting pop hits and receiving airplay alongside mainstream radio fare from newer artists at the time.". Can you tell me what it is?
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The answer is:
artists who were staples of the Contemporary Hit Radio format, such as Richard Marx, Michael Jackson, Bonnie Tyler, George Michael, Phil Collins, and Laura Branigan began crossing over to the AC charts

Problem: Given the question: I know that the answer to the question "What are the Cordilleran Ice Sheets made of?" is in "Indigenous genetic studies suggest that the first inhabitants of the Americas share a single ancestral population, one that developed in isolation, conjectured to be Beringia. The isolation of these peoples in Beringia might have lasted 1020,000 years. Around 16,500 years ago, the glaciers began melting, allowing people to move south and east into Canada and beyond. These people are believed to have followed herds of now-extinct Pleistocene megafauna along ice-free corridors that stretched between the Laurentide and Cordilleran Ice Sheets.". Can you tell me what it is?
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The answer is:
Ice

Problem: Given the question: I know that the answer to the question "Which sector contributes less than 10% of Delhi's gross SDP?" is in "The Government of National Capital Territory of Delhi does not release any economic figures specifically for New Delhi but publishes an official economic report on the whole of Delhi annually. According to the Economic Survey of Delhi, the metropolis has a net State Domestic Product (SDP) of Rs. 83,085 crores (for the year 200405) and a per capita income of Rs. 53,976($1,200). In the year 200809 New Delhi had a Per Capita Income of Rs.1,16,886 ($2,595).It grew by 16.2% to reach Rs.1,35,814 ($3,018) in 200910 fiscal. New Delhi's Per Capita GDP (at PPP) was at $6,860 during 200910 fiscal, making it one of the richest cities in India. The tertiary sector contributes 78.4% of Delhi's gross SDP followed by secondary and primary sectors with 20.2% and 1.4% contribution respectively.". Can you tell me what it is?
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The answer is:
primary