Q: Does "They may have unique design characteristics suited for home furnishings, such as hinged wooden shaft-access doors rather than the typical metal sliding doors of commercial elevators." provide a valid answer to "What type of elevator has a hinged wooden shaft-access door?"?
A: no

Q: Does "The Piedmont Triad, or center of the state, is home to Krispy Kreme, Mayberry, Texas Pete, the Lexington Barbecue Festival, and Moravian cookies." provide a valid answer to "What is the center of North Carolina called?"?
A: yes

Q: Does "Michael Greenberger specifically named the Atlanta-based IntercontinentalExchange, founded by Goldman Sachs, Morgan Stanley and BP as playing a key role in speculative run-up of oil futures prices traded off the regulated futures exchanges in London and New York." provide a valid answer to "Who purchased the International Petroleum Exchange in 2001?"?
A: no

Q: Does "Copper has been in use at least 10,000 years, but more than 95% of all copper ever mined and smelted has been extracted since 1900, and more than half was extracted in only the last 24 years." provide a valid answer to "What percentage of copper has been extracted since 1900?"?
A:
yes