Assertion: magnetic field's field line | /r/CapableOf | enter magnet
Facets:
value: somewhere
type: LOCATION
Source sentences:
text: If a B-field line enters a magnet somewhere it has to leave somewhere else; it is not allowed to have an end point.
text: If a magnetic field line enters a magnet somewhere it has to leave the magnet somewhere else; it is not allowed to have an end point.