( ( ( ( ( The ( wooden wedges ) ) ( were ( soaked ( with water ) ) ) ) and ) ( ( ( the forces ) ( generated ( by ( the ( expanding wedges ) ) ) ) ) ( ( caused fractures ) ( to ( occur ( between holes ) ) ) ) ) ) . )
(ROOT (S (S (NP (DT The) (JJ wooden) (NNS wedges)) (VP (VBD were) (VP (VBN soaked) (PP (IN with) (NP (NN water)))))) (CC and) (S (NP (NP (DT the) (NNS forces)) (VP (VBN generated) (PP (IN by) (NP (DT the) (VBG expanding) (NNS wedges))))) (VP (VBD caused) (NP (NNS fractures)) (S (VP (TO to) (VP (VB occur) (PP (IN between) (NP (NNS holes)))))))) (. .)))
The wooden wedges were soaked with water and the forces generated by the expanding wedges caused fractures to occur between holes.
(ROOT (S (NP (NN Ice) (NN wedging)) (VP (VBZ occurs) (SBAR (IN because) (S (NP (NN water)) (VP (VBZ expands))))) (. .)))