( ~ ( ( this ~ ) ( ( ( ca n't ) ( be ( blocked ( by ( blue creatures ) ) ) ) ) . ) ) )
(ROOT (S (ADVP (RB ~)) (NP (DT this) (NN ~)) (VP (MD ca) (RB n't) (VP (VB be) (VP (VBN blocked) (PP (IN by) (NP (JJ blue) (NNS creatures)))))) (. .)))
~this~ can't be blocked by blue creatures.
(ROOT (S (NP (DT A) (JJ blue) (NN block)) (VP (VBZ appears) (ADJP (JJ blue) (PP (IN in) (NP (DT the) (NN sunlight)))) (SBAR (IN if) (S (NP (RB only) (JJ blue) (NN light)) (VP (VBZ is) (VP (VBN reflected) (PP (IN by) (NP (DT the) (NN block)))))))) (. .)))