(S (S (BASENP (PRP They)) (VP (VBP are) (VP (ADVP (RB still)) (VP (VBG trying) (S (VP (TO to) (VP (VB determine) (SBAR (SBAR (WHADJP (RB just) (WHADJP (WRB how) (JJ large))) (S (BASENP (DT the) (NN crash)) (VP (VBD was)))) (CC and) (SBAR (WHADVP (WRB how)) (S (BASENP (DT the) (NN earth)) (VP (MD will) (VP (VB be) (VP (VBN affected)))))))))))))) (PERIOD .))