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.
--------
Question: a dipole speaker is a type of a loudspeaker.

Answer: dipole speaker


Question: aaron sherritt (1855 - 26 june 1880) was a close friend of joe byrne and later ned kelly.

Answer: aaron sherritt


Question: granada television was a television production company.

Answer:
granada television