A group of men playing Lacrosse at night.
The men were playing lacrosse at night.
The men were the group  playing lacrosse at night.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & of(x1,x2) & at(e1,x5) & n_night(x5) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & n_lacrosse(x4) & (x2 = x3) & n_man(x2) & n_group(x1))
exists e1 x1 x2 x3.(n_man(x1) & at(e1,x3) & n_night(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_lacrosse(x2))