Question:
Choose your answer: Is "Today, the floor event occurs on a carpeted 12m 12m square, usually consisting of hard foam over a layer of plywood, which is supported by springs or foam blocks generally called a "spring" floor." a good answer to the question "What is the floor exercise events performed on now?"
Answer:
yes

Question:
Choose your answer: Is "In addition, not all Native Americans have been tested, so scientists do not know for sure that Native Americans have only the genetic markers they have identified." a good answer to the question "Who says genetic tests can't tell the difference between different Native American nations?"
Answer:
no

Question:
Choose your answer: Is "Thanks to over a century of linguistics data collected by researchers at the University of Pennsylvania, the Philadelphia dialect under sociolinguist William Labov has been one of the best-studied forms of American English.[f]" a good answer to the question "Who studies the accent at the University of Pennsylvania?"
Answer:
yes