Assertion: glider | /r/HasProperty | launched by aerotow
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: Sailplanes are usually launched by winch or aerotow, though other methods, auto tow and bungee, are occasionally used.
text: Sailplanes are usually launched by winch or aerotow, though other methods, auto tow and bungee, are occasionally used.