A saxophonist and singer perform.
A singer and saxophonist are on stage in front of a crowd.
No mention of a crowd or why they are performing
exists e1 x1 x2 x3.(Actor(e1,x1) & v_perform(e1) & n_singer(x3) & n_saxophonist(x2) & subset_of(x3,x1) & subset_of(x2,x1))
exists p1 x1 x2 x3 x4 x5.(in(p1,x4) & of(x4,x5) & n_crowd(x5) & n_front(x4) & exists x6.(on(x1,x6) & n_stage(x6)) & n_saxophonist(x3) & n_singer(x2) & subset_of(x3,x1) & subset_of(x2,x1))