The Herndon Command Center immediately established a teleconference between Boston, New York, and Cleveland Centers so that Boston Center could help the others understand what was happening.
( ( The ( Herndon ( Command Center ) ) ) ( immediately ( ( ( established ( ( a teleconference ) ( between ( ( ( ( ( Boston , ) ( New York ) ) , ) and ) ( Cleveland Centers ) ) ) ) ) ( so ( that ( ( Boston Center ) ( could ( help ( ( the others ) ( understand ( what ( was happening ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (DT The) (NNP Herndon) (NNP Command) (NNP Center)) (ADVP (RB immediately)) (VP (VBD established) (NP (NP (DT a) (NN teleconference)) (PP (IN between) (NP (NP (NNP Boston)) (, ,) (NP (NNP New) (NNP York)) (, ,) (CC and) (NP (NNP Cleveland) (NNPS Centers))))) (SBAR (RB so) (IN that) (S (NP (NNP Boston) (NNP Center)) (VP (MD could) (VP (VB help) (S (NP (DT the) (NNS others)) (VP (VB understand) (SBAR (WHNP (WP what)) (S (VP (VBD was) (VP (VBG happening)))))))))))) (. .)))
The Herndon Command Center established a teleconference between the centers so Boston could tell the others what was going on on their radar.
( ( The ( Herndon ( Command Center ) ) ) ( ( ( established ( ( a teleconference ) ( between ( the centers ) ) ) ) ( so ( Boston ( could ( tell ( ( the others ) ( what ( was ( ( going on ) ( on ( their radar ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Herndon) (NNP Command) (NNP Center)) (VP (VBD established) (NP (NP (DT a) (NN teleconference)) (PP (IN between) (NP (DT the) (NNS centers)))) (SBAR (IN so) (S (NP (NNP Boston)) (VP (MD could) (VP (VB tell) (NP (NP (DT the) (NNS others)) (SBAR (WHNP (WP what)) (S (VP (VBD was) (VP (VBG going) (PRT (RP on)) (PP (IN on) (NP (PRP$ their) (NN radar))))))))))))) (. .)))