The light source 210 is extinguished; consequently, {HEAD ~ the interior design element} is not visible to {TAIL ~ the viewer} 
is not visible to
The light source 210 is extinguished ; consequently , { HEAD ~ the interior design element } is not visible to { TAIL ~ the viewer }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL