What are the keywords in the following sentence? ceiling fan is rotating at the ceiling of the room .
ceiling, fan, room

What are the keywords in the following sentence? firefighters battle a fire at an apartment complex .
complex, fire, firefighter

What are the keywords in the following sentence? Elsewhere, someone opens a flask in his living quarters and finds the vessel empty.
find, flask, open

What are the keywords in the following sentence? Painters often dress casually when working.
dress, painter, work