A man riding a black and white bull while people with cowboy hats on are watching.
man at rodeo
Just because the man is riding a bull does not mean he is at or part of a rodeo.
exists e1 p1 s1 s2 x1 x2 x3.(a_topic(x1) & exists e2 s3 s4 x4 x5 x6.(Actor(e2,x4) & v_watch(e2) & with(x4,x5) & Theme(s4,x6) & a_on(s4) & (x5 = x6) & n_hat(x5) & a_cowboy(s3) & Theme(s3,x5) & n_people(x4)) & while(e1,p1) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_bull(x3) & a_white(s2) & Theme(s2,x3) & a_black(s1) & Theme(s1,x3) & (x1 = x2) & n_man(x1))
exists x1 x2.(a_topic(x1) & at(x1,x2) & n_rodeo(x2) & n_man(x1))