A young boy swinging upside down from a bar.
A young boy is climbing a fence.
A boy cannot be swinging while also climbing.
exists e1 s1 x1 x2 x3.(a_topic(x1) & r_upside(e1) & from(e1,x3) & n_bar(x3) & r_down(e1) & Actor(e1,x2) & v_swing(e1) & (x1 = x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_climb(e1) & n_fence(x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))