Some boys are in a front yard playing and one is trying to walk on his hands.
Kids are playing outside.
boys are kids. If they are in a front yard, they would be outside.
exists e1 p1 p2 x1 x2 x5.(Topic(e1,p2) & Actor(e1,x2) & v_try(e1) & exists e2.(on(e2,x5) & Actor(e2,x2) & v_walk(e2)) & n_hand(x5) & of(x5,x1) & n_male(x1) & n_thing(x2) & card_eq_1(x2) & exists s1 x3 x4.(in(x1,x3) & n_playing(x3) & of(x3,x4) & n_yard(x4) & a_front(s1) & Theme(s1,x3)) & n_boy(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_outside(x2) & n_kid(x1))