Assertion: ellipsoid's surface | /r/HasProperty | below the surface of the earth
Facets:
value: at a point
type: TEMPORAL
Source sentences:
text: If the ellipsoid’s surface is below the surface of the earth at the point, the ellipsoidal height has a positive sign; if the ellipsoid’s surface is above the surface of the earth at the point, the ellipsoidal height has a negative sign.
text: If the ellipsoid surface is below the surface of the earth at a point, the ellipsoid height has a positive sign, as you see here in this image.