A guy laying in the grass.
A guy is doing jumping jacks.
A guy laying can't be doing jumping jacks.
exists e1 x1 x2 x3.(n_grass(x3) & a_topic(x1) & in(e1,x3) & Actor(e1,x2) & v_lay(e1) & (x1 = x2) & n_guy(x1))
exists e1 e2 x1 x2.(Theme(e2,x2) & Actor(e2,x1) & v_do(e2) & n_jack(x2) & Actor(e1,x2) & v_jump(e1) & n_guy(x1))