Mabee speculates that these depressions form because fractured rock weathers more easily than solid rock, and can cause the ground to sag in places where it is weak.
(it; is; weak; L:places) (Mabee; speculates; that these depressions form because fractured rock weathers more easily than solid rock, and can cause the ground to sag in places) Context(Mabee speculates,List([0, 16))):(these depressions; form; ) (fractured rock weathers; can cause; the ground to sag in places) Context(fractured rock weathers can cause,List([53, 119))):(the ground; to sag; L:in places)
Mabee speculates,List([0, 16)) fractured rock weathers can cause,List([53, 119))
it Mabee these depressions fractured rock weathers the ground
is speculates form can cause to sag
weak L:places
that these depressions form because fractured rock weathers more easily than solid rock, and can cause the ground to sag in places
the ground to sag in places
L:in places