(S (S (BASENP (NNS Physicists)) (VP (VBD announced) (SBAR (S (BASENP (PRP they)) (VP (VBD had) (VP (VP (VP (VP (VBN sent) (BASENP (NNS protons))) (BASENP (PDT all) (DT the) (NN way))) (NP (BASENP (JJ round) (DT the) (NN 27) (NN km) (NN ring)) (PP (IN beneath) (NP (DT the) (NP (BASENP (NNP France) (CC --) (NNP Switzerland)) (NN border)))))) (COMMA ,) (PP (IN for) (NP (BASENP (DT the) (JJ first) (NN time)) (PP (IN since) (NP (BASENP (DT a) (JJ major) (NN failure)) (ADVP (BASENP (NN 14) (NNS months)) (RB ago)))))))))))) (PERIOD .))