Assertion: convoy's position | /r/HasProperty | based on information
Facets:
value: primarily
type: DEGREE
Source sentences:
text: Allied convoy dead reckoning positions are based primarily on information supplied by the Convoy Plot Section.
text: Positions of these pins are based on information received from the various reporting centers and indicate not only just what ships are in port, but the general trend of shipping, areas of congestion, and similar details.