Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Example Input: Context: In the Night Garden In a magical forest, colourful characters have adventures. A mysterious tide of water appears suddenly next to Igglepiggle. He discovers that he can control it by moving his feet. Excited, he takes it to Makka Pakka who finds it very useful indeed. Children Under 5 Today on BBC2 from 11:05am to 11:35am Last of the Summer Wine To relax, Howard tries a simple trick to change his appearance enough to fool even Pearl. But he soon discovers that taking over someone else's identity can be equally dangerous. Comedy Sitcoms Today on G.O.L.D. from 12:40pm to 1: 20pm The Secret Circle Cassie is an orphaned teenager who discovers that not only is she a witch but that she is also the key that will unlock a centuries-old battle between good and evil. When Cassie accepts a cute boy's invitation to the school dance, Adam struggles to control his anger. Today on Sky Living from 10:00pm to 11:00pm The Kid's Speech Eleven-year-olds, Reggie and William, and 14-year-old Bethan, are determined to improve their speech. Along with their parents, they start a unique course at the Michael Palin Centre for Stammering children. Over two weeks, they open up about their fears and frustrations. Documentary Today on BBC1 London from 10:35pm to 11:25pm 
 Question: Which play can be used to inspire children who are afraid to speak in public?
Example Output: the kid's speech.

Example Input: Context: A rock is a naturally formed, non-living Earth material. Rocks are made of collections of mineral grains that are held together in a firm, solid mass (Figure 1.1). How is a rock different from a mineral? Rocks are made of minerals. The mineral grains in a rock may be so tiny that you can only see them with a microscope, or they may be as big as your fingernail or even your finger (Figure Rocks are identified primarily by the minerals they contain and by their texture. Each type of rock has a distinctive set of minerals. A rock may be made of grains of all one mineral type, such as quartzite. Much more commonly, rocks are made of a mixture of different minerals. Texture is a description of the size, shape, and arrangement of mineral grains. Are the two samples in Figure 1.3 the same rock type? Do they have the same minerals? The same texture? The different colors and textures seen in this rock are caused by the presence of different minerals. A pegmatite from South Dakota with crystals of lepidolite, tourmaline, and quartz (1 cm scale on the upper left). Sample 2 Crystals are tiny or microscopic Magma erupted and cooled quickly Andesite As seen in Table 1.1, these two rocks have the same chemical composition and contain mostly the same minerals, but they do not have the same texture. Sample 1 has visible mineral grains, but Sample 2 has very tiny or invisible grains. The two different textures indicate different histories. Sample 1 is a diorite, a rock that cooled slowly from magma (molten rock) underground. Sample 2 is an andesite, a rock that cooled rapidly from a very similar magma that erupted onto Earths surface. A few rocks are not made of minerals because the material they are made of does not fit the definition of a mineral. Coal, for example, is made of organic material, which is not a mineral. Can you think of other rocks that are not made of minerals? Click image to the left or use the URL below. URL: Click image to the left or use the URL below. URL: 
 Question: _______________________ is a naturally formed, non-living earth material.
Example Output: rock

Example Input: Context: The 1988 Dungeons & Dragons role-playing game module Ruins of Adventure was produced using the same adventure scenario as Pool of Radiance, using the same plot, background, setting, and many of the same characters as the computer game. 
 Question: The Pool of Radiance is based upon what?
Example Output:
ruins of adventure