Play sport does not have a prerequisite of put on your pajammas. Exercise has a prerequisite of run. Play sport has a prerequisite of get fit. Run has a prerequisite of run. Get fit causes drink less booze. Dry your hand does not have a prerequisite of train lot. Get fit has a prerequisite of exercise. Play frisbee has a prerequisite of agility. Dry your hand does not have a prerequisite of agility. Run is a good exercise. Run has a prerequisite of agility. Pretend has a prerequisite of train lot. Get fit does not have a prerequisite of get some ice cream. Play sport does not have a prerequisite of get some ice cream.
Exercise does not have a prerequisite of run.