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: the beethoven house (german: beethoven-haus) in bonn, germany, is a memorial site, museum and cultural institution serving various purposes.

SOLUTION: beethoven house

PROBLEM: silliness is when a person acts like a fool, or shows a lack of good sense or judgment.

SOLUTION: silliness

PROBLEM: the flag of thailand has five stripes in the colours red, white, and blue.

SOLUTION:
flag of thailand