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: an electronic book (also called an e-book, ebook or digital book) is a book in digital form.

SOLUTION: e-book

PROBLEM: st. govan's chapel is a chapel in st. govan, pembrokeshire, in the country of wales.

SOLUTION:
st. govan's chapel