Two men in black shirts do handstands on a stage.
Acrobats do a routine for an audience.
Men can wear black shirts and do handstands without being Acrobats.  Just because men are on stage it does not mean there is an audience.
exists e1 s1 x1 x2 x3 x4.(on(e1,x4) & n_stage(x4) & Theme(e1,x3) & Actor(e1,x1) & v_do(e1) & n_handstand(x3) & in(x1,x2) & n_shirt(x2) & a_black(s1) & Theme(s1,x2) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(for(e1,x3) & n_audience(x3) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_routine(x2) & n_acrobat(x1))