A young boy with black hair and tie-dyed shirt and jeans and an older man balding with a long-sleeved dark shirt and jeans working on lawn equipment .
It is probable that a boy helps his father fix a broken lawn mower .
It is probably not the case that a boy helps his father fix a broken lawn mower .
It is probable that a boy helps his father fix a broken lawn mower .
A boy helps his father fix a broken lawn mower .