Assertion: fortification | /r/HasProperty | observation posts
Facets:
value: with interconnected tunnels
type: OTHER
value: with containing
type: OTHER
value: typically
type: DEGREE
Source sentences:
text: These installations typically included gun emplacements, pill boxes, fire command or observation posts, camouflage strategies, underground bunkers, sometimes with interconnected tunnels, containing magazines, supply and plotting rooms and protected engine rooms supplying power to the gun turrets and searchlights.