TASK DEFINITION: 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.
PROBLEM: Category: POET-TREE 
Clue: "O my palm-tree…rustle thy boughs and set thy trunk all bare", she wrote in "Sonnets from the Portuguese"

SOLUTION: elizabeth barrett browning

PROBLEM: Category: SPORTS 
Clue: Football's imaginary plane which neither team may cross until the ball is snapped

SOLUTION: the line of scrimmage

PROBLEM: Category: 1980s LIT 
Clue: Type of machine referred to in the title of Tracy Kidder's nonfiction work "The Soul of a New Machine"

SOLUTION:
computer