A black man stands on a moving boat in the harbor.
T-Pain performs "I'm On A Boat".
Just because you see a moving boat in the harbor, doesn't mean it's a black man or music is playing or being performed.
exists e1 e2 s1 x1 x2 x3.(n_harbor(x3) & on(e1,x2) & in(x2,x3) & n_boat(x2) & Actor(e2,x2) & v_move(e2) & Actor(e1,x1) & v_stand(e1) & n_man(x1) & a_black(s1) & Theme(s1,x1))
exists p1 s1 x1.(a_topic(x1) & exists p2 s2 x2.(r_.(x1) & on(x1,x2) & n_boat(x2) & a_''(s2) & Theme(s2,x2)) & n_person(x1) & that(x1,p1) & n_perform(x1) & a_t-pain(s1) & Theme(s1,x1))