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: tabouleh ( "tabūlah"; also tabbouleh or tab(b)ouli) is a salad.

SOLUTION: tabouleh

PROBLEM: anton rubinstein (born vikhvatinets 28 november 1829; died petershof 20 november 1894) was a russian pianist and composer.

SOLUTION: anton rubinstein

PROBLEM: hummingbirds are small birds of the family trochilidae.

SOLUTION:
hummingbird