Text: For nearly all models of induction cooktops, a cooking vessel must be made of, or contain, a ferrous metal such as cast iron or some stainless steels. The iron in the pot concentrates the current to produce heat in the metal. If the metal is too thin, or does not provide enough resistance to current flow, heating will not be effective. Most induction tops will not heat copper or aluminum vessels because the magnetic field cannot produce a concentrated current; ''all metal'' induction tops use much higher frequencies to overcome that effect. Any vessel can be used if placed on a suitable metal disk which functions as a conventional hotplate.

Question: can you use a cast iron skillet on an induction stove?
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Answer: yes

Text: A double check valve or double check assembly (DCA) is a backflow prevention device designed to protect water supplies from contamination. It is also a valve used in air brake systems on heavy trucks.

Question: is a double check valve the same as a backflow preventer?
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Answer: no

Text: The Naval Station Newport (NAVSTA Newport) is a United States Navy base located in the city of Newport and the town of Middletown, Rhode Island. Naval Station Newport is home to the Naval War College and the Naval Justice School. It once was the homeport for Cruiser Destroyer Force Atlantic (COMCRUDESLANT), which relocated to Naval Station Norfolk in the early 1970s. Newport now maintains inactive ships at its pier facilities, along with the United States Coast Guard. In BRAC 2005 (Base Realignment and Closure), NAVSTA Newport gained over five hundred billets, in addition to receiving, again, the Officer Candidate School (OCS), the Naval Supply Corps School (in 2011), and several other activities, to include a few Army Reserve units.

Question: is there a military base in rhode island?
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Answer: yes

Text: Timothy Theodore Duncan (born April 25, 1976) is an American retired professional basketball player who played his entire 19-year career with the San Antonio Spurs of the National Basketball Association (NBA). Widely considered to be the greatest power forward of all time, he is a five-time NBA champion, two-time NBA MVP, three-time NBA Finals MVP, NBA All-Star Game MVP and NBA Rookie of the Year. He is also a 15-time NBA All-Star and the only player to be selected to both the All-NBA and All-Defensive Teams in all of his first 13 seasons.

Question: has there ever been a rookie all star in the nba?
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Answer:
yes