Two people on a stage hold microphones.
The people are doing improv comedy.
Being on stage does not imply doing improv comedy.
exists x1 x2 x3 x4.(a_topic(x1) & Time(x1,x4) & n_microphone(x4) & on(x1,x2) & n_hold(x2) & of(x2,x3) & n_stage(x3) & n_people(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(n_people(x1) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_comedy(x2) & a_improv(s1) & Theme(s1,x2))