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: dominoes is a game played with small tiles called dominoes.

SOLUTION: dominoes

PROBLEM: ravenscraig is an area of land in north lanarkshire, scotland.

SOLUTION: ravenscraig

PROBLEM: stinging nettles ("urtica dioica") are a type of plant which have stinging defensive hairs on the leaves and stems.

SOLUTION:
stinging nettle