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)))))))) (. .)))
Britain could lose its place at the top of this field of endeavor.
( Britain ( ( could ( ( lose ( its place ) ) ( at ( ( the top ) ( of ( ( this field ) ( of endeavor ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Britain)) (VP (MD could) (VP (VB lose) (NP (PRP$ its) (NN place)) (PP (IN at) (NP (NP (DT the) (NN top)) (PP (IN of) (NP (NP (DT this) (NN field)) (PP (IN of) (NP (NN endeavor))))))))) (. .)))