Young man with long dark hair plays a guitar on stage.
A comedian tells jokes on stage.
It is stated that a young man is playing guitar, and therefore a comedian cannot be telling jokes.
exists e1 s1 s2 s3 x1 x2 x3 x4.(on(e1,x4) & n_stage(x4) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_guitar(x3) & with(x1,x2) & n_hair(x2) & a_dark(s3) & Theme(s3,x2) & a_long(s2) & Theme(s2,x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(on(e1,x3) & n_stage(x3) & Theme(e1,x2) & Actor(e1,x1) & v_tell(e1) & n_joke(x2) & n_comedian(x1))