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.

Q: the 1939–40 nhl season was the 23rd season for the national hockey league.

A: 1939–40 nhl season
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Q: tabouleh ( "tabūlah"; also tabbouleh or tab(b)ouli) is a salad.

A: tabouleh
****
Q: stanley smith stevens (4 november 1906 – 18 january 1973) was an american psychologist.

A:
stanley smith stevens
****