Assertion: parabola's line | /r/CapableOf | intersect oval
Facets:
value: at any point of the oval
type: LOCATION
value: in none
type: OTHER
Source sentences:
text: An oval is a point set that has the following properties, which are held by conics: 1) any line intersects an oval in none, one or two points, 2) at any point of the oval there exists a unique tangent line.