Assertion: amusement park's roller coaster | /r/CapableOf | feature vertical loop
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Source sentences:
text: Another roller coaster, The Demon (Dæmonen), features an Immelmann loop, a vertical loop, and a zero-G roll all during the ride time of just one minute and forty six seconds.
text: Some roller coasters feature one or more inversions (such as vertical loops) which turn the riders upside down.