Assertion: railway's line | /r/HasProperty | combined with four pairs of points
Facets:
value: to allow
type: PURPOSE
value: in such a way
type: MANNER
Source sentences:
text: A double slip switch (double slip) is a narrow-angled diagonal flat crossing of two lines combined with four pairs of points in such a way as to allow vehicles to change from one straight track to the other, as well as going straight across.