input question: What is the question to: "Tacoma (, ) is a mid-sized urban port city and the county seat of Pierce County, Washington , United States."? The topic is Tacoma, Washington.???
output answer: "what county is tacoma washington in?"

input question: What is the question to: "His 1651 book Leviathan established the foundation for most of Western political philosophy from the perspective of social contract theory."? The topic is Thomas Hobbes.???
output answer: "what is the title of Hobbes main work?"

input question: What is the question to: "Developing this idea further, a motorized crane equipped with a drag bucket or clamshell (grabber) that is used to scoop material from the bottom of a body of water is also a dredger."? The topic is Dredging.???
output answer: "how does a dredge work??"

input question: What is the question to: "The Geothermal energy of the Earth's crust originates from the original formation of the planet (20%) and from radioactive decay of minerals (80%)."? The topic is Geothermal energy.???
output answer:
"what is the source of geothermal energy?"