Input: Nutrition
Plants uptake essential elements from the soil through their roots and from the air (consisting of mainly nitrogen and oxygen) through their leaves. Green plants obtain their carbohydrate supply from the carbon dioxide in the air by the process of photosynthesis. Carbon and oxygen are absorbed from the air, while other nutrients are absorbed from the soil. Nutrient uptake in the soil is achieved by cation exchange, wherein root hairs pump hydrogen ions (H+) into the soil through proton pumps. These hydrogen ions displace cations attached to negatively charged soil particles so that the cations are available for uptake by the root. In the leaves, stomata open to take in carbon dioxide and expel oxygen. The carbon dioxide molecules are used as the carbon source in photosynthesis.

How do plants absorb essential elements that are present in the soil?
Output: through their roots

Input: Article: Chopin's public popularity as a virtuoso began to wane, as did the number of his pupils, and this, together with the political strife and instability of the time, caused him to struggle financially. In February 1848, with the cellist Auguste Franchomme, he gave his last Paris concert, which included three movements of the Cello Sonata Op. 65.

Now answer this question: Plitical strife, popularity decline, instability of era and fewer students caused Chopin to what?

Output: struggle financially.

Article: The Mildred Lane Kemper Art Museum, established in 1881, is one of the oldest teaching museums in the country. The collection includes works from 19th, 20th, and 21st century American and European artists, including George Caleb Bingham, Thomas Cole, Pablo Picasso, Max Ernst, Alexander Calder, Jackson Pollock, Rembrandt, Robert Rauschenberg, Barbara Kruger, and Christian Boltanski. Also in the complex is the 3,000 sq ft (300 m2) Newman Money Museum. In October 2006, the Kemper Art Museum moved from its previous location, Steinberg Hall, into a new facility designed by former faculty member Fumihiko Maki. Interestingly, the new Kemper Art Museum is located directly across from Steinberg Hall, which was Maki's very first commission in 1959.

Question: What facility was Fumihiko Maki's first commission?
Ans: Steinberg Hall

Here is a question about this article: Following a headlining set at Coachella 2011 that was described by The Hollywood Reporter as "one of greatest hip-hop sets of all time", West released the collaborative album Watch the Throne with Jay-Z. By employing a sales strategy that released the album digitally weeks before its physical counterpart, Watch the Throne became one of the few major label albums in the Internet age to avoid a leak. "Niggas in Paris" became the record's highest charting single, peaking at number five on the Billboard Hot 100. In 2012, West released the compilation album Cruel Summer, a collection of tracks by artists from West's record label GOOD Music. Cruel Summer produced four singles, two of which charted within the top twenty of the Hot 100: "Mercy" and "Clique". West also directed a film of the same name that premiered at the 2012 Cannes Film Festival in custom pyramid-shaped screening pavilion featuring seven screens.
What is the answer to this question: In what year was "Cruel Summer" released?
****
So... 2012

The problem: Answer a question about this article:
One of the first recorded instances of translation in the West was the rendering of the Old Testament into Greek in the 3rd century BCE. The translation is known as the "Septuagint", a name that refers to the seventy translators (seventy-two, in some versions) who were commissioned to translate the Bible at Alexandria, Egypt. Each translator worked in solitary confinement in his own cell, and according to legend all seventy versions proved identical. The Septuagint became the source text for later translations into many languages, including Latin, Coptic, Armenian and Georgian.
Why is the translation of the Old Testament into Greek known as the Septuagint?
****
The answer: seventy translators

The problem: Answer a question about this article:
The economy of Russia became heavily industrialized, accounting for about two-thirds of the electricity produced in the USSR. It was, by 1961, the third largest producer of petroleum due to new discoveries in the Volga-Urals region and Siberia, trailing only the United States and Saudi Arabia. In 1974, there were 475 institutes of higher education in the republic providing education in 47 languages to some 23,941,000 students. A network of territorially-organized public-health services provided health care. After 1985, the restructuring policies of the Gorbachev administration relatively liberalised the economy, which had become stagnant since the late 1970s, with the introduction of non-state owned enterprises such as cooperatives. The effects of market policies led to the failure of many enterprises and total instability by 1990.
How many institutions of higher education did Russia possess in 1974?
****
The answer:
475