( Sometimes ( ( ( ( ( ( the ( two sides ) ) ( of ( a fracture ) ) ) ( moved ( due ( to ( the pressure ) ) ) ) ) and ) ( ( a fault ) ( was formed ) ) ) . ) )
(ROOT (S (ADVP (RB Sometimes)) (S (NP (NP (DT the) (CD two) (NNS sides)) (PP (IN of) (NP (DT a) (NN fracture)))) (VP (VBD moved) (ADJP (JJ due) (PP (TO to) (NP (DT the) (NN pressure)))))) (CC and) (S (NP (DT a) (NN fault)) (VP (VBD was) (VP (VBN formed)))) (. .)))
Sometimes the two sides of a fracture moved due to the pressure and a fault was formed.
(ROOT (S (NP (DT A) (NN fault)) (VP (VBZ is) (NP (NP (DT the) (NN fracture)) (VP (VBN caused) (SBAR (WHADVP (WRB when)) (S (NP (NP (NNS rocks)) (PP (IN on) (NP (DT both) (NNS sides)))) (VP (VBP move))))))) (. .)))