A man blows into a tube while standing in front of a man at the drumset on stage.
The men are giving a concert for a group of school children.
The concert may not be in front of a group of school children.
exists e1 e2 x1 x2 x3 x4 x5 x6 x7 x8.(n_drumset(x7) & while(e1,e2) & on(e2,x8) & n_stage(x8) & at(e2,x7) & in(e2,x5) & of(x5,x6) & n_man(x6) & n_front(x5) & Actor(e2,x1) & v_stand(e2) & rel(e1,x3) & n_blow(x3) & of(x3,x4) & n_man(x4) & into(e1,x2) & n_tube(x2) & Actor(e1,x1) & v_event(e1) & n_thing(x1))
exists e1 x1 x2 x3 x4 x5.(n_man(x1) & for(e1,x3) & of(x3,x4) & n_child(x4) & of(x4,x5) & n_school(x5) & n_group(x3) & Theme(e1,x2) & Actor(e1,x1) & v_give(e1) & n_concert(x2))