Assertion: ellipse's foci | /r/AtLocation | major axis
Facets:
value: at f(c
type: LOCATION
value: always
type: TEMPORAL
Source sentences:
text: The foci are always on the major axis.
text: The foci are on the major axis at F(c, 0) and F(-c, 0) where
text: The foci are on the major axis at F(0, c) and F(0, -c) where
text: The foci are on the major axis at F(0, c) and F(0, -c) where