A man in a suit standing behind a podium lectures to a group of people sitting at tables.
The man is standing behind a podium.
A man standing behind a podium is a man standing behind a podium.
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 e1 x1 x2.(n_man(x1) & behind(e1,x2) & n_podium(x2) & Actor(e1,x1) & v_stand(e1))