Assertion: doorknob | /r/HasProperty | arranged in straight line
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text: On Ninja Warrior UK, the Doorknob Grasper appeared as the fourth obstacle during the finals' Stage 2, with the number of doorknobs was increased to 5, but the doorknobs were arranged in a straight line (similar to the obstacle used in SASUKE, and then on American Ninja Warrior 4 and American Ninja Warrior 5).