Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.

Input: Consider Input: inverness airport is an international airport at dalcross, 7 nautical miles (~8 miles or 13 km) north east of the city of inverness in the scottish highlands.

Output: inverness airport


Input: Consider Input: masakuni yamamoto (山本 昌邦, yamamoto masakuni, born april 4, 1958) is a former japanese football player.

Output: masakuni yamamoto


Input: Consider Input: the united states dollar, or the american dollar, is the official currency, or money, of the united states of america and is also used in a number of .


Output: united states dollar