Man singing and playing guitar for a small audience.
Man giving a concert at a dive bar.
Just because a man is singing and playing guitar for a small audience doesn't mean the man is giving a concert or that he is at a dive bar.
exists e1 s1 s2 x1 x2 x3 x4.(a_topic(s1) & subset_of(x3,s1) & for(x3,x4) & n_audience(x4) & a_small(s2) & Theme(s2,x4) & n_guitar(x3) & Actor(e1,x3) & v_play(e1) & subset_of(x1,s1) & n_singing(x1) & of(x1,x2) & n_man(x2))
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & at(e1,x4) & n_bar(x4) & of(x4,x5) & n_dive(x5) & Theme(e1,x3) & Actor(e1,x2) & v_give(e1) & n_concert(x3) & (x1 = x2) & n_man(x1))