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 simplicity, answers should be in all lower cased letters.

Category: LADY'S NIGHT 
Clue: At a 1984 dinner, this "doubting" woman became the 1st woman to win the National Press Club's Fourth Estate Award
helen thomas

Category: AMERICANA 
Clue: In 1986 this model kit company merged with its main competitor, Monogram
revell

Category: SIMPLE SCIENCE 
Clue: Plant from which Eli Whitney's gin removed seeds

cotton