TASK DEFINITION: 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.
PROBLEM: teleportation is the supposed movement of matter from one point to another without travelling across the physical space between them.

SOLUTION: teleportation

PROBLEM: nick halling is a british sportscaster.

SOLUTION: nick halling

PROBLEM: cloud gate is a public sculpture by indian-born british artist sir anish kapoor.

SOLUTION:
cloud gate