Problem: Given the question: What is the question to: "Heart rate can vary as the body's need to absorb oxygen and excrete carbon dioxide changes, such as during physical exercise , sleep , illness, or as a result of ingesting drugs :"? The topic is Heart rate.
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The answer is:
"what is my resting heart rate at age 24?"


Problem: Given the question: What is the question to: "Informal logic, intuitively, refers to the principles of logic and logical thought outside of a formal setting."? The topic is Informal logic.
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The answer is:
"what does informal logic mean?"


Problem: Given the question: What is the question to: "In photography , bracketing is the general technique of taking several shots of the same subject using different camera settings."? The topic is Bracketing.
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The answer is:

"what is bracketing in photography?"