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


question:
ronald ross (13 may 1857 – 16 september 1932) was an english doctor.
answer:
ronald ross


question:
shaun of the dead is a 2004 british-french zombie-themed romantic comedy movie.
answer:

shaun of the dead