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

Input: Consider Input: Who practices SODIS?, Context: Solar water disinfection (SODIS) involves exposing water-filled plastic polyethylene terephthalate (PET) bottles to sunlight for several hours. Exposure times vary depending on weather and climate from a minimum of six hours to two days during fully overcast conditions. It is recommended by the World Health Organization as a viable method for household water treatment and safe storage. Over two million people in developing countries use this method for their daily drinking water.

Output: Over two million people


Input: Consider Input: What is a computer program sometimes sitting idle until?, Context: Seemingly, multitasking would cause a computer that is switching between several programs to run more slowly, in direct proportion to the number of programs it is running, but most programs spend much of their time waiting for slow input/output devices to complete their tasks. If a program is waiting for the user to click on the mouse or press a key on the keyboard, then it will not take a "time slice" until the event it is waiting for has occurred. This frees up time for other programs to execute so that many programs may be run simultaneously without unacceptable speed loss.

Output: for the user to click on the mouse or press a key


Input: Consider Input: The act of raising a liquid's temperatures to a point where it bubbles and turns to vapor/gas is called?, Context: There is evidence that, at least from the a.d. 2nd century, the vocabulary and phonology of Roman Tarraconensis was different from the rest of Roman Hispania. Differentiation has arisen generally because Spanish, Asturian, and Galician-Portuguese share certain peripheral archaisms (Spanish hervir, Asturian/Portuguese ferver vs. Catalan bullir, Occitan bolir "to boil") and innovatory regionalisms (Sp novillo, Ast nuviellu vs. Cat torell, Oc taurèl "bullock"), while Catalan has a shared history with the Western Romance innovative core, especially Occitan.


Output: boil