In the United States, NORAD is divided into three sectors.
( ( In ( the ( United States ) ) ) ( , ( NORAD ( ( is ( divided ( into ( three sectors ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (DT the) (NNP United) (NNPS States))) (, ,) (NP (NNP NORAD)) (VP (VBZ is) (VP (VBN divided) (PP (IN into) (NP (CD three) (NNS sectors))))) (. .)))
The are three NORAD sectors in the United States.
( The ( ( are ( ( three ( NORAD sectors ) ) ( in ( the ( United States ) ) ) ) ) . ) )
(ROOT (S (NP (NNP The)) (VP (VBP are) (NP (NP (CD three) (JJ NORAD) (NNS sectors)) (PP (IN in) (NP (DT the) (NNP United) (NNPS States))))) (. .)))