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: What has to be done with lights in order for them to work?, Context: Entry lights can be used outside to illuminate and signal the entrance to a property. These lights are installed for safety, security, and for decoration.

Output: installed


Input: Consider Input: Which of the following is not a port linked to Palermo: Genoa, Naples or marina?, Context: The port of Palermo, founded by the Phoenicians over 2,700 years ago, is, together with the port of Messina, the main port of Sicily. From here ferries link Palermo to Cagliari, Genoa, Livorno, Naples, Tunis and other cities and carry a total of almost 2 million passengers annually. It is also an important port for cruise ships. Traffic includes also almost 5 million tonnes of cargo and 80.000 TEU yearly. The port also has links to minor sicilian islands such as Ustica and the Aeolian Islands (via Cefalù in summer). Inside the Port of Palermo there is a section known as "tourist marina" for sailing yachts and catamarans.

Output: marina


Input: Consider Input: When did the popularity of the Athenian serenades begin?, Context: The Heptanesean kantádhes (καντάδες 'serenades'; sing.: καντάδα) became the forerunners of the Greek modern song, influencing its development to a considerable degree. For the first part of the next century, several Greek composers continued to borrow elements from the Heptanesean style. The most successful songs during the period 1870–1930 were the so-called Athenian serenades, and the songs performed on stage (επιθεωρησιακά τραγούδια 'theatrical revue songs') in revue, operettas and nocturnes that were dominating Athens' theater scene.


Output: 1870