A man measures the depth of snow.
A man is sitting on a couch.
A man cannot both measure the depth of snow and be sitting on a couch simultaneously.
exists e1 x1 x2 x3.(n_depth(x2) & Theme(e1,x2) & Actor(e1,x1) & v_measure(e1) & of(x2,x3) & n_snow(x3) & n_man(x1))
exists e1 x1 x2.(on(e1,x2) & n_couch(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))