Two girls play tug-of-war in a muddy pit, while another girl looks on.
Two children playing a messy game while someone else watches.
The two children who are playing a messy game are the two girls playing in a muddy pit. Someone who's watching refers to the third girl who is looking on
exists e1 p1 s1 x1 x2 x3.(exists e2 p2 x4.(exists s2.(Theme(s2,x4) & a_on(s2)) & Topic(e2,p2) & Actor(e2,x4) & v_look(e2) & n_girl(x4) & -(x4 = x1)) & n_girl(x1) & n_girl(x1) & while(e1,p1) & in(e1,x3) & n_pit(x3) & a_muddy(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_tug-of-war(x2) & card_eq_2(x1))
exists e1 p1 s1 x1 x2 x3.(a_topic(x1) & exists e2 x4.(Actor(e2,x4) & v_watch(e2) & r_else(x4) & n_person(x4)) & while(e1,p1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_game(x3) & a_messy(s1) & Theme(s1,x3) & (x1 = x2) & n_child(x1) & card_eq_2(x1))