As a result of being stretched, the heart muscles become weakened and the organ looses it's ability to pump blood efficiently throughout the body.
(the heart muscles; become; weakened) (the heart muscles; weakened; ) (the organ; looses; it's ability) Context(the organ looses,List([70, 86))):(it; 's; ability to pump blood efficiently throughout the body)
the organ looses,List([70, 86))
the heart muscles the heart muscles the organ it
become weakened looses 's
weakened
it's ability
ability to pump blood efficiently throughout the body