A young child partially concealed by a pile of colored balls.
A child plays in a pile of balls.
A child concealed by a pile of balls means he plays in a pile of balls.
exists e1 e2 s1 s2 x1 x2 x3.(a_partially(s2) & Manner(e1,s2) & Actor(e1,x2) & of(x2,x3) & n_ball(x3) & Theme(e2,x3) & v_color(e2) & n_pile(x2) & Theme(e1,x1) & v_conceal(e1) & n_child(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(in(e1,x2) & of(x2,x3) & n_ball(x3) & n_pile(x2) & Actor(e1,x1) & v_play(e1) & n_child(x1))