People watching a man breakdance.
The man has been breakdancing for 30 minutes.
People watching the man doesn't indicate that he has been dancing for 30 minutes.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_watch(e1) & n_breakdance(x3) & of(x3,x4) & n_man(x4) & (x1 = x2) & n_people(x1))
exists e1 x1 x2.(n_man(x1) & for(e1,x2) & n_minute(x2) & n_date(x2) & a_date_day_30(x2) & a_date_day_30(x2) & Actor(e1,x1) & v_breakdance(e1))