A man in a yellow suit is standing front of the crowd.
The man is all alone.
If a man is in front of a crowd, he is not alone.
exists p1 s1 x1 x2 x4.(n_crowd(x4) & exists e1 x3.((x1 = x3) & of(x3,x4) & n_front(x3) & Actor(e1,x3) & v_stand(e1)) & in(x1,x2) & n_suit(x2) & a_yellow(s1) & Theme(s1,x2) & n_man(x1))
exists s1 x1.(n_man(x1) & r_all(s1) & Theme(s1,x1) & a_alone(s1))