Each center thus had part of the knowledge of what was going on across the system.
( ( Each center ) ( thus ( ( had ( part ( of ( ( the knowledge ) ( of ( what ( was ( ( going on ) ( across ( the system ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (DT Each) (NN center)) (ADVP (RB thus)) (VP (VBD had) (NP (NP (NN part)) (PP (IN of) (NP (NP (DT the) (NN knowledge)) (PP (IN of) (SBAR (WHNP (WP what)) (S (VP (VBD was) (VP (VBG going) (PRT (RP on)) (PP (IN across) (NP (DT the) (NN system)))))))))))) (. .)))
Each tower knew what was going on system wide.  
( ( Each tower ) ( ( knew ( what ( was ( going ( on ( system wide ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT Each) (NN tower)) (VP (VBD knew) (SBAR (WHNP (WP what)) (S (VP (VBD was) (VP (VBG going) (PP (IN on) (NP (NN system) (JJ wide)))))))) (. .)))