(S (S (S (PP (VBG According) (PP (TO to) (BASENP (DT the) (NN spokesman)))) (COMMA ,) (S (S (BASENP (DT a) (NN family)) (VP (VBD was) (VP (VBG riding) (PP (IN on) (NP (BASENP (DT a) (NN tractor)) (PP (IN with) (NP (BASENP (DT a) (NN truck-bed)) (VP (VBN hitched) (PP (IN on) (ADVP (RB back))))))))))) (COMMA ,) (SBAR (WHADVP (WRB when)) (S (BASENP (PRP it)) (VP (VP (VBD hit) (BASENP (DT the) (NNS explosives))) (PP (IN on) (BASENP (DT a) (JJ central) (NN road)))))))) (COLON ;) (S (NP (NP (BASENP (DT all)) (PP (IN of) (BASENP (DT the) (NNS people)))) (ADJP (JJ aboard))) (VP (VBD died) (COMMA ,) (PP (VBG including) (NP (BASENP (NN two) (NNS children)) (CC and) (BASENP (NN two) (NNS women))))))) (PERIOD .))