That couldn't happen in a sane world, either.
( That ( ( ( could n't ) ( ( ( happen ( in ( a ( sane world ) ) ) ) , ) either ) ) . ) )
(ROOT (S (NP (DT That)) (VP (MD could) (RB n't) (VP (VB happen) (PP (IN in) (NP (DT a) (JJ sane) (NN world))) (, ,) (ADVP (RB either)))) (. .)))
A meteor couldn't strike down in a sane world.
( ( A meteor ) ( ( ( could n't ) ( ( strike down ) ( in ( a ( sane world ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (NN meteor)) (VP (MD could) (RB n't) (VP (VB strike) (PRT (RP down)) (PP (IN in) (NP (DT a) (JJ sane) (NN world))))) (. .)))