A boy riding a zip line and another behind him waiting his turn.
Waiting in lines is fun.
A boy riding a zip line and another behind him waiting his turn but there is no mention of it being fun.
exists e1 e2 x1 x2 x3 x4 x5.(Theme(e2,x5) & Actor(e2,x4) & v_wait(e2) & n_turn(x5) & of(x5,x1) & n_male(x1) & n_male(x1) & behind(x4,x1) & n_thing(x4) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_line(x2) & of(x2,x3) & n_zip(x3) & n_boy(x1))
exists e1 p1 x1 x2.(exists x3.((e1 = x3) & n_fun(x3)) & in(e1,x2) & n_line(x2) & Actor(e1,x1) & v_wait(e1) & n_thing(x1))