Band performing music in a visitors information center.
A singer calls out to a visitor.
The band could be doing any activity, there is no reason to assume one of them calls out to a visitor.
exists e1 x1 x2 x3 x4 x5.(ne_nam_band(x1) & in(e1,x3) & n_center(x3) & of(x3,x5) & n_information(x5) & of(x3,x4) & n_visitor(x4) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_music(x2))
exists e1 s1 x1 x2.(a_out(s1) & Manner(e1,s1) & to(e1,x2) & n_visitor(x2) & Actor(e1,x1) & v_call(e1) & n_singer(x1))