Two children fight in a square while people look on.
Two kids are writting an essay.
One does not fight and write simultaneously.
exists e1 p1 x1 x2.(exists e2 p2 x3.(exists s1.(Theme(s1,x3) & a_on(s1)) & Topic(e2,p2) & Actor(e2,x3) & v_look(e2) & n_people(x3)) & while(e1,p1) & in(e1,x2) & n_square(x2) & Actor(e1,x1) & v_fight(e1) & n_child(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_writt(e1) & n_essay(x2) & n_kid(x1) & card_eq_2(x1))