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: JOHN/PAUL 
Clue: Paul wrote this paean to Soviet women while in India with the Maharishi Mahesh Yogi

SOLUTION: "back in the u.s.s.r."

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: A YEAR ENDING IN '09 
Clue: Galileo demonstrates his first telescope to Venetian lawmakers

SOLUTION:
1609