On stage a man with a microphone and a man with a saxophone perform.
There is a group of people at a metal concert.
Saxophones are not used in metal concerts.
exists e1 x1 x2 x3 x4 x5 x6.(on(e1,x6) & n_stage(x6) & Actor(e1,x1) & v_perform(e1) & with(x1,x2) & subset_of(x4,x2) & with(x4,x5) & n_saxophone(x5) & n_man(x4) & subset_of(x3,x2) & n_microphone(x3) & n_man(x1))
exists p1 x1 x2 x3 x4 x5.((x1 = x2) & at(x2,x4) & n_concert(x4) & of(x4,x5) & n_metal(x5) & of(x2,x3) & n_people(x3) & n_group(x2))