(S (S (S (BASENP (DT The) (NN seizure)) (VP (VBD occurred) (PP (ADVP (RB shortly)) (PP (IN after) (BASENP (DT the) (NN flag) (NN ceremony)))))) (COMMA ,) (SBAR (WHADVP (WRB when)) (S (BASENP (PRP they)) (VP (VBD were) (ADJP (JJ due) (S (VP (TO to) (VP (VB start) (BASENP (NNS classes)))))))))) (PERIOD .))