A group of people pulling and falling on each other on the ground, with their shirts off.
They people are fighting on the ground pulling off each other shirts.
Not all people pulling and falling on each other on the ground, with their shirts off are fighting.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(n_shirt(x6) & of(x6,x5) & n_thing(x5) & n_ground(x5) & a_topic(x1) & a_off(s1) & Manner(e2,s1) & with(e2,x6) & on(e2,x5) & all x7.(n_other(x7) -> on(e2,x7)) & Actor(e2,x4) & v_fall(e2) & (x1 = x4) & Actor(e1,x3) & v_pull(e1) & (x1 = x3) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 s1 x1 x2 x3 x5.(n_shirt(x5) & n_ground(x2) & on(e1,x2) & all x4.((-(x4 = x5) & n_shirt(x4)) -> exists e2 s2.(a_off(s2) & Manner(e2,s2) & Theme(e2,x4) & Actor(e2,x3) & v_pull(e2))) & (x2 = x3) & Actor(e1,x1) & v_fight(e1) & n_people(x1) & a_they(s1) & Theme(s1,x1))