If freezing occurs, the expansion of the water exerts tremendous pressure this causes the rock mass to break into smaller pieces.
(freezing; occurs; ) (the expansion of the water; exerts; tremendous pressure this causes the rock mass to break into smaller pieces) (this; causes; the rock mass to break into smaller pieces) Context(this causes,List([74, 85))):(the rock mass; to break; into smaller pieces)
this causes,List([74, 85))
freezing the expansion of the water this the rock mass
occurs exerts causes to break
tremendous pressure this causes the rock mass to break into smaller pieces
the rock mass to break into smaller pieces
into smaller pieces