Projectors are arranged on, in, or about the structure to project {HEAD ~ light} toward {TAIL ~ the object} 
Projectors are arranged on , in , or about the structure to project { HEAD ~ light } toward { TAIL ~ the object }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL