input question: What is the question to: "Shoulder impingement syndrome, also called painful arc syndrome, supraspinatus syndrome, swimmer's shoulder, and thrower's shoulder, is a clinical syndrome which occurs when the tendons of the rotator cuff muscles become irritated and inflamed as they pass through the subacromial space, the passage beneath the acromion ."? The topic is Impingement syndrome.???
output answer: "what is impingement of the shoulder?"


What is the question to: "Steam is a digital distribution , digital rights management , multiplayer and communications platform developed by Valve Corporation ."? The topic is Steam (software).
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Answer: "what is steam by valve corporation?"


Q: What is the question to: "9 – 12 February (Vietnam)"? The topic is Chinese New Year.
A: "how many days does the chinese new year last?"


Question: What is the question to: "Single Malt Scotch is single malt whisky made in Scotland using a pot still distillation process at a single distillery , with malted barley as the only grain ingredient."? The topic is Single malt Scotch.
Answer: "how is single malt scotch made?"


[Q]: What is the question to: ""Sun City" is a 1985 protest song written by Steven Van Zandt , produced by Van Zandt and Arthur Baker and recorded by Artists United Against Apartheid to convey opposition to the South African policy of apartheid ."? The topic is Sun City (song).
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[A]: "who sang sun city?"


Problem: Given the question: What is the question to: "Approximately 72% of the planet's surface (~3.6x108 km2) is covered by saline water that is customarily divided into several principal oceans and smaller seas, with the ocean covering approximately 71% of the Earth's surface."? The topic is Ocean.
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The answer is:

"how much of earth is covered ocean water?"