A man on stage with a microphone in front of an audience.
Standup comedian performing on stage
Not all men on stage are standup comedians. Not all men on stage with a microphone are performing.
exists x1 x2 x3 x4 x5.(a_topic(x1) & on(x1,x2) & with(x2,x3) & in(x3,x4) & of(x4,x5) & n_audience(x5) & n_front(x4) & n_microphone(x3) & n_stage(x2) & n_man(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_stage(x4) & Actor(e1,x3) & v_perform(e1) & (x1 = x3) & n_comedian(x1) & (x1 = x2) & ne_nam_standup(x2))