Assertion: parabola's value | /r/HasProperty | the distance
Facets:
value: from the vertex
type: LOCATION
value: between the focus
type: OTHER
Source sentences:
text: The "$a$" value is the distance from the vertex $(h, k)$ to the focus.
text: The absolute value of p is the distance between the vertex and the focus and the distance between the vertex and the directrix.