A group of men are performing on stage.
A group of men are playing in a band on stage in front of a large crowd of people.
Just because there is a group of men performing on a stage, it does not necessarily mean that they are playing in a band, or that they are in front of people, or that they are in front of a large crowd.
exists e1 x1 x2 x3.(on(e1,x3) & n_stage(x3) & Actor(e1,x1) & v_perform(e1) & of(x1,x2) & n_man(x2) & n_group(x1))
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(in(e1,x5) & of(x5,x6) & of(x6,x7) & n_people(x7) & n_crowd(x6) & a_large(s1) & Theme(s1,x6) & n_front(x5) & in(e1,x3) & on(x3,x4) & n_stage(x4) & n_band(x3) & Actor(e1,x1) & v_play(e1) & of(x1,x2) & n_man(x2) & n_group(x1))