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)))))))) (. .)))
Hall has extensively researched the role of other countries engaged in the same endeavor as the one Britain now leads.
( Hall ( ( ( has extensively ) ( researched ( ( the role ) ( of ( ( other countries ) ( ( engaged ( in ( the ( same endeavor ) ) ) ) ( as ( ( the ( one Britain ) ) ( now leads ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Hall)) (VP (VBZ has) (ADVP (RB extensively)) (VP (VBN researched) (NP (NP (DT the) (NN role)) (PP (IN of) (NP (NP (JJ other) (NNS countries)) (VP (VBN engaged) (PP (IN in) (NP (DT the) (JJ same) (NN endeavor))) (SBAR (IN as) (S (NP (DT the) (NN one) (NNP Britain)) (ADVP (RB now)) (VP (VBZ leads)))))))))) (. .)))