' The atom was named before it was split.
( ' ( ( The atom ) ( ( was ( named ( before ( it ( was split ) ) ) ) ) . ) ) )
(ROOT (S ('' ') (NP (DT The) (NN atom)) (VP (VBD was) (VP (VBN named) (SBAR (IN before) (S (NP (PRP it)) (VP (VBD was) (VP (VBN split))))))) (. .)))
There was a name for the atom before it became possible to split it.
( There ( ( ( was ( ( a name ) ( for ( the atom ) ) ) ) ( before ( it ( became ( possible ( to ( split it ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBD was) (NP (NP (DT a) (NN name)) (PP (IN for) (NP (DT the) (NN atom)))) (SBAR (IN before) (S (NP (PRP it)) (VP (VBD became) (ADJP (JJ possible) (S (VP (TO to) (VP (VB split) (NP (PRP it)))))))))) (. .)))