A man is happily laying bricks.
The man is sad.
The man cannot be happy and sad at the same time.
exists e1 s1 x1 x2.(a_happily(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_lay(e1) & n_brick(x2) & n_man(x1))
exists s1 x1.(n_man(x1) & Theme(s1,x1) & a_sad(s1))