A cause of leaf drop related to environment is that caused by chilling.
(leaf drop; related; to environment) (A cause of leaf drop; is; that caused by chilling) Context(A cause of leaf drop is,List([0, 46))):(that; caused; by chilling)
A cause of leaf drop is,List([0, 46))
leaf drop A cause of leaf drop that
related is caused
to environment
that caused by chilling
by chilling