The ice expands when it freezes, and the physical force of the ice pushing on the rock causes it to break.
(The ice; expands; T:when it freezes) (it; freezes; ) (the ice; pushing; on the rock) (the physical force of the ice; causes; it to break) Context(the physical force of the ice causes,List([37, 93))):(it; to break; )
the physical force of the ice causes,List([37, 93))
The ice it the ice the physical force of the ice it
expands freezes pushing causes to break
T:when it freezes
on the rock
it to break