Willie Nelson in a black shirt and cowboy hat.
Willie Nelson is performing in concert.
He may just be standing instead of performing in a concert.
exists s1 s2 x1 x2 x3 x4 x5.(ne_per_nelson(s1) & (s1 = x1) & ne_per_willie(x1) & a_topic(s1) & in(s1,x2) & n_hat(x4) & of(x4,x5) & n_cowboy(x5) & n_shirt(x3) & a_black(s2) & Theme(s2,x3) & subset_of(x4,x2) & subset_of(x3,x2))
exists e1 x1 x2 x3.(ne_per_nelson(x1) & (x1 = x2) & ne_per_willie(x2) & in(e1,x3) & n_concert(x3) & Actor(e1,x1) & v_perform(e1))