QUESTION: Do onions have a form that resembles the inside of a tree?
Please give rationale first, then the answer.
ANSWER: When bisected, an onion has rings that extend from the core to the outside. Trees are formed of a series of rings that extend from the inside to the outside.. The answer is: yes.

QUESTION: Is the most recent Democrat President in the US known for his painting practice?
Please give rationale first, then the answer.
ANSWER: George W. Bush is a former Republican President of the US. George W. Bush posts photos of his paintings online. Barack Obama succeeded George W. Bush as a Democrat President. Barack Obama doesn't post photos of paintings he has made.. The answer is: no.

QUESTION: Is the Royal Air Force ensign on the moon?
Please give rationale first, then the answer.
ANSWER: The Royal Air Force ensign is the flag of the Royal Air Force. The Royal Air Force is a branch of the British Armed Forces. Britain has never landed on the moon.. The answer is: no.

QUESTION: Does Mercury help detect coronavirus?
Please give rationale first, then the answer.
ANSWER:
Mercury is used in thermometers. Thermometers are used in taking body temperature. High temperature or fever is one symptom of coronavirus.. The answer is: yes.