The kid is sliding down a tan plastic slide.
The child is moving down a piece of playground equipment.
A kid is a child, sliding down is moving down, and tan plastic slide is playground equipment.
exists e1 s1 s2 x1 x2 x3.(n_kid(x1) & a_down(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_slide(e1) & n_slide(x2) & of(x2,x3) & n_plastic(x3) & a_tan(s1) & Theme(s1,x2))
exists e1 s1 x1 x2 x3 x4.(n_child(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_move(e1) & of(x2,x3) & n_equipment(x3) & of(x3,x4) & n_playground(x4) & n_piece(x2))