Assertion: coaster's track | /r/HasProperty | vertical
Facets:
Source sentences:
text: The widest loop is then obtained for the matching where the track is vertical and the narrowest when the condition is applied throughout the loop.
text: In the loop to the left, clothoid extends throughout the loop, whereas in the loop to the left, the top is a half circle, matched to the cornu spiral where the track is vertical.