These three boys are trying to carry some wood.
the boys are trying to carry bricks
Wood is not the same as bricks.
exists e1 p1 x1.(n_boy(x1) & card_eq_3(x1) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 x2.(Theme(e2,x2) & Actor(e2,x1) & v_carry(e2) & n_wood(x2)))
exists e1 p1 x1.(n_boy(x1) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 x2.(Theme(e2,x2) & Actor(e2,x1) & v_carry(e2) & n_brick(x2)))