Input: Nigeria
Everything in between the far south and the far north is savannah (insignificant tree cover, with grasses and flowers located between trees). Rainfall is more limited, to between 500 and 1,500 millimetres (20 and 60 in) per year. The savannah zone's three categories are Guinean forest-savanna mosaic, Sudan savannah, and Sahel savannah. Guinean forest-savanna mosaic is plains of tall grass interrupted by trees. Sudan savannah is similar but with shorter grasses and shorter trees. Sahel savannah consists of patches of grass and sand, found in the northeast. In the Sahel region, rain is less than 500 millimetres (20 in) per year and the Sahara Desert is encroaching. In the dry north-east corner of the country lies Lake Chad, which Nigeria shares with Niger, Chad and Cameroon.

How many inches of rain does central Nigeria get each year?
Output: between 500 and 1,500 millimetres (20 and 60 in)

Input: United States Air Force
The Air Force also provides Commissioned Officer Training (COT) for officers of all three components who are direct-commissioned to non-line positions due to their credentials in medicine, law, religion, biological sciences, or healthcare administration. Originally viewed as a "knife and fork school" that covered little beyond basic wear of the uniform, COT in recent years has been fully integrated into the OTS program and today encompasses extensive coursework as well as field exercises in leadership, confidence, fitness, and deployed-environment operations.

What fields of study in the COT are included in this area of the USAF?
Output: medicine, law, religion, biological sciences, or healthcare administration

Input: Westminster Abbey
Westminster diocese was dissolved in 1550, but the abbey was recognised (in 1552, retroactively to 1550) as a second cathedral of the Diocese of London until 1556. The already-old expression "robbing Peter to pay Paul" may have been given a new lease of life when money meant for the abbey, which is dedicated to Saint Peter, was diverted to the treasury of St Paul's Cathedral.

The abbey was recognised as what until 1556?
Output: a second cathedral of the Diocese of London

Input: Palermo
Being Sicily's administrative capital, Palermo is a centre for much of the region's finance, tourism and commerce. The city currently hosts an international airport, and Palermo's economic growth over the years has brought the opening of many new businesses. The economy mainly relies on tourism and services, but also has commerce, shipbuilding and agriculture. The city, however, still has high unemployment levels, high corruption and a significant black market empire (Palermo being the home of the Sicilian Mafia). Even though the city still suffers from widespread corruption, inefficient bureaucracy and organized crime, the level of crime in Palermo's has gone down dramatically, unemployment has been decreasing and many new, profitable opportunities for growth (especially regarding tourism) have been introduced, making the city safer and better to live in.

Palermo is the home of what mafia?
Output:
the Sicilian Mafia