Something to that effect.
( ( Something ( to ( that effect ) ) ) . )
(ROOT (NP (NP (NN Something)) (PP (TO to) (NP (DT that) (NN effect))) (. .)))
It's the opposite of that. 
( It ( ( 's ( ( the opposite ) ( of that ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ 's) (NP (NP (DT the) (NN opposite)) (PP (IN of) (NP (DT that))))) (. .)))