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.

the first and only written biography of doug henning, "spellbound: the wonder-filled life of doug henning" was published in 2009 (john harrison, boxoffice books, new york.)
doug henning

william frederick "buffalo bill" cody (february 26, 1846 january 10, 1917) was an american soldier, bison hunter and showman.
buffalo bill

percy bysshe shelley (4 august 1792 8 july 1822) was an english poet of the early nineteenth century.
percy bysshe shelley