Why pipe freezing is a problem Water has a unique property in that it expands as it freezes.
(pipe freezing; is; a problem Water has a unique property in that it expands) (Water; has; a unique property in that it expands) (it; expands; T:as it freezes) (it; freezes; )
pipe freezing Water it it
is has expands freezes
a problem Water has a unique property in that it expands
a unique property in that it expands
T:as it freezes