Assertion: parabola | /r/HasAspect | directrix
Facets:
value: a turning point,
type: TEMPORAL
Source sentences:
text: All parabolas have a directrix.
text: A parabola has a directrix and a focus, a turning point, 0 1 or 2 roots and so on.
text: A parabola has a directrix and a focus, a turning point, 0 1 or 2 roots and so on.
text: A parabola has a directrix and a focus, a turning point, 0 1 or 2 roots and so on.
text: A parabola has a directrix and a focus, a turning point, 0 1 or 2 roots and so on.