Assertion: curve | /r/HasProperty | vertical
Facets:
value: at that point
type: TEMPORAL
Source sentences:
text: eq F_{x}(x,y)} at ( x 0 , y 0 ) , {\displaystyle (x_{0},y_{0}),} the curve is vertical at that point, while if both F y ( x , y ) = 0
text: Thus, the AS curve is steep or vertical.