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:
the world conference of life and work was an ecumenic conference.
answer:
world conference of life and work

question:
nightmare disorder, also known as "dream anxiety disorder", is a sleep disorder characterized by frequent nightmares.
answer:
nightmare disorder

question:
in computer networking, mainly internet relay chat (irc), netsplit is the event when two servers disconnect.
answer:
netsplit