Two girls drawing sailboats with chalk on the side of concrete.
Girls are playing outside.
Girls drawing sailboats are not necessarily playing. They might be completing a job or a homework assignment. Drawing on concrete does not mean that you are outside. Some basements, for example, are made of concrete.
exists e1 x1 x2 x3 x4 x5 x6.(n_side(x5) & a_topic(x1) & with(e1,x4) & on(x4,x5) & of(x5,x6) & n_concrete(x6) & n_chalk(x4) & Theme(e1,x3) & Actor(e1,x2) & v_draw(e1) & n_sailboat(x3) & (x1 = x2) & n_girl(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_outside(x2) & n_girl(x1))