Man playing a violin sitting on a stage in an empty hall.
A man is indoors.
A stage is front part of performance hall that is indoor. A man is being referred in both sentence.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & Theme(e2,x3) & Actor(e2,x2) & v_play(e2) & in(e1,x6) & n_hall(x6) & a_empty(s1) & Theme(s1,x6) & on(e1,x5) & n_stage(x5) & Actor(e1,x4) & v_sit(e1) & (x3 = x4) & n_violin(x3) & (x1 = x2) & n_man(x1))
exists p1 x1.(exists x2.((x1 = x2) & n_indoor(x2)) & n_man(x1))