A man helps a boy ride a bike.
A boy's father is helping him ride a bike.
jut because the helps a boy to ride a bike that doesn't mean he must be his father
exists x1.(all x2.(n_bike(x2) -> exists e1 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_help(e1) & for(x3,x2) & n_ride(x3) & of(x3,x4) & n_boy(x4))) & n_man(x1))
exists e1 p1 x1 x2.(exists e2 x3.(Theme(e2,x3) & Actor(e2,x1) & v_ride(e2) & n_bike(x3)) & Recipient(e1,p1) & Actor(e1,x2) & Topic(e1,x1) & v_help(e1) & n_male(x1) & n_father(x2) & of(x2,x1) & n_boy(x1))