You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.

Category: BEST ACTRESS OSCAR BY FILM 
Clue: "Moonstruck"
cher

Category: IT'S NOT SO 
Clue: Though 4,500 miles long, it's not visible from space, as its materials are similar in color to the surrounding soil
the great wall of china

Category: SPORTS 
Clue: In 1980, this U.S. speed skater became the first athlete to win five individual gold medals in one Olympics

eric heiden