Assertion: naval fort | /r/CapableOf | report german air raids
Facets:
value: as a landmark
type: MANNER
value: following the thames
type: LOCATION
Source sentences:
text: The Maunsell naval forts were built in the Thames estuary and operated by the Royal Navy, to deter and report German air raids following the Thames as a landmark, and prevent attempts to lay mines by aircraft in this important shipping channel.