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.
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Question: Category: MATH & SCIENCE 
Clue: Around 1850 George Boole devised a new take on this branch of math

Answer: algebra


Question: Category: 1791 
Clue: He published the first part of “The Rights of Man” in England & was later charged with treason

Answer: thomas paine


Question: Category: "GREEN" THINGS 
Clue: It's the body part you're said to have if you've a knack for growing plants easily

Answer:
a green thumb