Assertion: unicycle's wheel | /r/HasProperty | stopped by rut
Facets:
Source sentences:
text: Because the rider sat so high above the center of gravity, if the front wheel was stopped by a stone or rut in the road, or the sudden emergence of a dog, the entire apparatus rotated forward on its front axle, and the rider, with his legs trapped under the handlebars, was dropped unceremoniously on his head.