(S (S (S (BASENP (NNP Professor) (NNP Mirecki)) (VP (VP (VBD had) (VP (VBN left) (BASENP (PRPD his) (NN home)))) (CC and) (VP (VBD was) (VP (VBG driving) (PP (TO to) (BASENP (NN breakfast))))))) (SBAR (WHADVP (WRB when)) (S (BASENP (PRP he)) (VP (VBD noticed) (S (BASENP (DT the) (NNS men)) (VP (VP (VBG tailgating) (BASENP (PRP him))) (PP (IN in) (BASENP (DT a) (NN pickup) (NN truck))))))))) (PERIOD .))