a DJ in the middle of the room pushing buttons on a machine.
A person is indoors.
DJ is a person and middle of the room is indoors.
exists e1 s1 x1 x2 x3 x4 x5.(n_room(x2) & n_middle(x1) & a_topic(s1) & in(s1,x1) & of(x1,x2) & on(e1,x5) & n_machine(x5) & Theme(e1,x4) & Actor(e1,x3) & v_push(e1) & n_buttons(x4) & (x2 = x3) & ne_org_dj(s1))
exists p1 x1.(exists x2.((x1 = x2) & n_indoor(x2)) & n_person(x1))