Assertion: barbed wire | /r/HasProperty | laid to formidable depth
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Barbed wire, which could and often was laid to a formidable depth, proved difficult to destroy, although high explosive artillery was often launched so as to clear the enemy lines of wire; all too often however the wire remained uncut, as was disastrously the case for advancing British forces on the first day of the Battle of the Somme in 1916.