Input: Article: Due to the work nature of airline pilots, who often cross several timezones and regions of sunlight and darkness in one day, and spend many hours awake both day and night, they are often unable to maintain sleep patterns that correspond to the natural human circadian rhythm; this situation can easily lead to fatigue. The NTSB cites this as contributing to many accidents[unreliable medical source?]  and has conducted several research studies in order to find methods of combating fatigue in pilots.

Now answer this question: What can the lack of regular sleep patterns cause?

Output: fatigue

Input: Article: Following Anwar Sadat's ascension to the Egyptian presidency, Libya's relations with Egypt deteriorated. Sadat was perturbed by Gaddafi's unpredictability and insistence that Egypt required a cultural revolution. In February 1973, Israeli forces shot down Libyan Arab Airlines Flight 114, which had strayed from Egyptian airspace into Israeli-held territory during a sandstorm. Gaddafi was infuriated that Egypt had not done more to prevent the incident, and in retaliation planned to destroy the RMS Queen Elizabeth 2, a British ship chartered by American Jews to sail to Haifa for Israel's 25th anniversary. Gaddafi ordered an Egyptian submarine to target the ship, but Sadat cancelled the order, fearing a military escalation.

Now answer this question: What city was the destination of RMS Queen Elizabeth 2?

Output: Haifa

Input: Article: Greek colonies and communities have been historically established on the shores of the Mediterranean Sea and Black Sea, but the Greek people have always been centered around the Aegean and Ionian seas, where the Greek language has been spoken since the Bronze Age. Until the early 20th century, Greeks were distributed between the Greek peninsula, the western coast of Asia Minor, the Black Sea coast, Cappadocia in central Anatolia, Egypt, the Balkans, Cyprus, and Constantinople. Many of these regions coincided to a large extent with the borders of the Byzantine Empire of the late 11th century and the Eastern Mediterranean areas of ancient Greek colonization. The cultural centers of the Greeks have included Athens, Thessalonica, Alexandria, Smyrna, and Constantinople at various periods.

Now answer this question: Where are Greek States believed to have been settled ?

Output:
Greek colonies and communities have been historically established on the shores of the Mediterranean Sea and Black Sea