Hall said that Britain has enjoyed a half-century of pre-eminence in this field of endeavor and that this could now be destroyed.
( Hall ( ( said ( ( ( that ( Britain ( has ( ( enjoyed ( ( a half-century ) ( of pre-eminence ) ) ) ( in ( ( this field ) ( of endeavor ) ) ) ) ) ) ) and ) ( that ( this ( ( could now ) ( be destroyed ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Hall)) (VP (VBD said) (SBAR (SBAR (IN that) (S (NP (NNP Britain)) (VP (VBZ has) (VP (VBN enjoyed) (NP (NP (DT a) (NN half-century)) (PP (IN of) (NP (NN pre-eminence)))) (PP (IN in) (NP (NP (DT this) (NN field)) (PP (IN of) (NP (NN endeavor))))))))) (CC and) (SBAR (IN that) (S (NP (DT this)) (VP (MD could) (ADVP (RB now)) (VP (VB be) (VP (VBN destroyed)))))))) (. .)))
After half a century, Britain is destined to remain the leader in this field.
( ( After ( half ( a century ) ) ) ( , ( Britain ( ( is ( destined ( to ( remain ( ( the leader ) ( in ( this field ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN After) (NP (PDT half) (DT a) (NN century))) (, ,) (NP (NNP Britain)) (VP (VBZ is) (VP (VBN destined) (S (VP (TO to) (VP (VB remain) (NP (NP (DT the) (NN leader)) (PP (IN in) (NP (DT this) (NN field))))))))) (. .)))