Simplify the following text for a Grade 11 native English-speaking person.
Original: The Nebula Award is given each year by the Science Fiction and Fantasy Writers of America ( SFWA ) , for the best science fiction\/fantasy fiction published in the United States during the previous year .
Simplified: The Nebula Award is an award given each year by the Science Fiction and Fantasy Writers of America ( SFWA ) , for the best science fiction\/fantasy fiction written in the United States .