In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

Example Input: From what era, once thought devoid of animal life, was evidence of grazer populations discovered?, Context: Some paleontologists suggest that animals appeared much earlier than the Cambrian explosion, possibly as early as 1 billion years ago. Trace fossils such as tracks and burrows found in the Tonian period indicate the presence of triploblastic worms, like metazoans, roughly as large (about 5 mm wide) and complex as earthworms. During the beginning of the Tonian period around 1 billion years ago, there was a decrease in Stromatolite diversity, which may indicate the appearance of grazing animals, since stromatolite diversity increased when grazing animals went extinct at the End Permian and End Ordovician extinction events, and decreased shortly after the grazer populations recovered. However the discovery that tracks very similar to these early trace fossils are produced today by the giant single-celled protist Gromia sphaerica casts doubt on their interpretation as evidence of early animal evolution.
Example Output: the Tonian period

Example Input: What did the Founding Fathers intend more of?, Context: In contrast, Europe has a greater history of unitary states than North America, thus European "federalism" argues for a weaker central government, relative to a unitary state. The modern American usage of the word is much closer to the European sense. As the power of the Federal government has increased, some people have perceived a much more unitary state than they believe the Founding Fathers intended. Most people politically advocating "federalism" in the United States argue in favor of limiting the powers of the federal government, especially the judiciary (see Federalist Society, New Federalism).
Example Output: limiting the powers of the federal government

Example Input: Altruism came from what?, Context: Eliot and her circle, who included her companion George Henry Lewes (the biographer of Goethe) and the abolitionist and social theorist Harriet Martineau, were much influenced by the positivism of Auguste Comte, whom Martineau had translated. Comte had proposed an atheistic culte founded on human principles – a secular Religion of Humanity (which worshiped the dead, since most humans who have ever lived are dead), complete with holidays and liturgy, modeled on the rituals of what was seen as a discredited and dilapidated Catholicism. Although Comte's English followers, like Eliot and Martineau, for the most part rejected the full gloomy panoply of his system, they liked the idea of a religion of humanity. Comte's austere vision of the universe, his injunction to "vivre pour altrui" ("live for others", from which comes the word "altruism"), and his idealisation of women inform the works of Victorian novelists and poets from George Eliot and Matthew Arnold to Thomas Hardy.
Example Output:
live for others