When Farmer Hoggett takes Babe to the sheepdog trials, they go to Kingsmith Showgrounds. Dick King-Smith is the author of the book _Babe the Gallant Pig_, on which the screenplay is based.
To clarify, the original title of the book by Dick King Smith was "The Sheep Pig". I'm not saying you're wrong, but British books have been renamed in America (Are you writing from the U.S.?) For another example, see "Harry Potter and the (Philosopher's/Sorcerer's) Stone" by JK Rowling.
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