(S (S (NP (BASENP (DT The) (NN purpose)) (PP (IN of) (BASENP (DT the) (NN tour)))) (VP (VBZ is) (S (VP (TO to) (VP (VP (VB communicate) (PP (TO to) (NP (BASENP (QP (NNS approx) (PERIOD .) (NN Eighty)) (NN percent)) (PP (IN of) (NP (BASENP (NNP Marconi) (POS 's)) (NN staff)))))) (CC and) (VP (VB allow) (S (BASENP (PRP them)) (VP (TO to) (VP (VP (VB ask) (BASENP (NNS questions))) (PP (IN about) (NP (BASENP (DT the) (NN asset) (NN purchase)) (VP (VBN proposed) (PP (IN by) (BASENP (NNP Ericsson))))))))))))))) (PERIOD .))