A man helping a boy ride a bicycle.
A man is assisting a child.
helping is the same as assisting
exists x1 x2.(a_topic(x1) & all x3.(n_bicycle(x3) -> exists e1 x4 x5.(Theme(e1,x4) & Actor(e1,x2) & v_help(e1) & for(x4,x3) & n_ride(x4) & of(x4,x5) & n_boy(x5))) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_assist(e1) & n_child(x2) & n_man(x1))