A man in formal attire plays a piano on the sidewalk of a city street.
A man in jeans is playing a guitar on the sidewalk.
He can't be in formal attire and in jeans at the same time.
exists e1 s1 x1 x2 x3 x4 x5 x6.(n_sidewalk(x4) & on(e1,x4) & of(x4,x5) & n_street(x5) & of(x5,x6) & n_city(x6) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_piano(x3) & in(x1,x2) & n_attire(x2) & a_formal(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2 x3 x4.(n_sidewalk(x4) & on(e1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_guitar(x3) & in(x1,x2) & n_jeans(x2) & n_man(x1))