Group of men loading a cannon.
The men clean the cannon.
The men cannot load a cannon while cleaning it.
exists e1 s1 x1 x2 x3.(ne_org_group(s1) & a_topic(s1) & of(s1,x1) & Theme(e1,x3) & Actor(e1,x2) & v_load(e1) & n_cannon(x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_cannon(x2) & n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_clean(e1))