(S (S (S (BASENP (DT The) (NN pilot)) (VP (VBD was) (VP (VBN killed)))) (SBAR (IN while) (S (VP (VBG flying) (PP (IN during) (NP (BASENP (DT an) (NN air-show)) (PP (IN at) (BASENP (NNP Marine) (NNP Corps) (NNP Air) (NNP Station) (NNP Beaufort))))))))) (PERIOD .))