A man in a dark shirt playing a guitar while standing beside a microphone.
Bruce Springsteen is performing in a dark shirt.
A man in a dark shirt is not implied to be Bruce Springsteen.  Playing the guitar next to a microphone does not imply he is performing.
exists e1 e2 s1 x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x2) & while(e1,e2) & beside(e2,x5) & n_microphone(x5) & Actor(e2,x3) & v_stand(e2) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & n_guitar(x4) & (x2 = x3) & n_shirt(x2) & a_dark(s1) & Theme(s1,x2) & n_man(x1))
exists e1 s1 x1 x2 x3.(ne_per_springsteen(x1) & (x1 = x2) & ne_per_bruce(x2) & in(e1,x3) & n_shirt(x3) & a_dark(s1) & Theme(s1,x3) & Actor(e1,x1) & v_perform(e1))