(S (S (BASENP (PRP They)) (VP (VP (VBD did) (RB not)) (VP (VP (VB draw) (BASENP (DT any) (NN conclusion))) (PP (IN as) (PP (TO to) (SBAR (WHADVP (WRB why)) (S (BASENP (JJ such) (NN movement)) (VP (VBD was) (VP (VBN observed)))))))))) (PERIOD .))