Assertion: polygon's number | /r/CapableOf | obstruct the supply of ammunition
Facets:
value: to the british defenders
type: TRANSITIVE-OBJECT
Source sentences:
text: The German infantry managed to advance on the flanks, about 100 yd (91 m) near the Menin road and 600 yd (550 m) north of the Reutelbeek, close to Black Watch Corner, with the help of a number of observation and ground-attack aircraft and a box-barrage, which obstructed the supply of ammunition to the British defenders.