Assertion: convoy's position | /r/HasProperty | shown by card
Facets:
Source sentences:
text: Estimated positions of enemy submarines (supplied by F-21) are also shown by pins and cards which distinguish between patrolling, outbound and homebound U/boats.
text: Estimated positions of enemy submarines (supplied by F-21) are also shown by pins and cards which distinguish between patrolling, outbound and homebound U/boats.