A man in a suit standing behind a podium lectures to a group of people sitting at tables.
The man is sitting and waiting for his turn to talk.
Standing and sitting are not the same action.
exists e2 e1 e3 x1 x2 x3 x4 x5 x6 x7 x8.(to(e2,x5) & of(x5,x6) & at(e3,x8) & n_table(x8) & Actor(e3,x7) & v_sit(e3) & (x6 = x7) & n_people(x6) & n_group(x5) & Actor(e2,x1) & v_lecture(e2) & in(x1,x2) & behind(e1,x4) & n_podium(x4) & Actor(e1,x3) & v_stand(e1) & (x2 = x3) & n_suit(x2) & n_man(x1))
exists e2 e1 p1 x1 x2.(n_turn(x2) & of(x2,x1) & n_male(x1) & n_man(x1) & Topic(e2,p1) & Actor(e2,x1) & v_wait(e2) & exists e3.(Actor(e3,x2) & v_talk(e3)) & Actor(e1,x1) & v_sit(e1))