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.

the global hunger index is a measurement to measure the hunger situation in a country.
global hunger index

bici bici or bicibici muhallebisi is a turkish dessert.
bici bici

columbus crew sc (known before 2015 as simply "columbus crew") are an american soccer team that plays in major league soccer in columbus, ohio.

columbus crew sc