(S (S (NP (BASENP (NNS Technicians)) (PP (IN on) (BASENP (DT the) (NN ground)))) (VP (MD will) (VP (VP (VB analyze) (BASENP (DT the) (NN information))) (S (VP (TO to) (VP (VB determine) (SBAR (IN if) (S (BASENP (DT this) (NN residue)) (VP (VBZ has) (VP (VBN been) (VP (VBG contributing) (PP (TO to) (NP (BASENP (DT the) (JJ problematic) (NN operation)) (PP (IN of) (BASENP (DT the) (NNP Elektron)))))))))))))))) (PERIOD .))