A man at a podium standing behind his laptop with a microphone giving a presentation in front of a poster.
A woman at a podium standing behind his laptop with a microphone giving a presentation in front of a poster.
A woman is not a man. Also if they are both behind his laptop, they both cannot be giving a presentation simultaneously (assuming his is not a type-o).
exists e2 e1 x1 x2 x3 x4 x5 x6 x7 x8 x9.(a_topic(x1) & at(x1,x2) & with(e1,x5) & Theme(e2,x7) & Actor(e2,x6) & v_give(e2) & in(x7,x8) & of(x8,x9) & n_poster(x9) & n_front(x8) & n_presentation(x7) & (x5 = x6) & n_microphone(x5) & behind(e1,x4) & n_laptop(x4) & of(x4,x1) & n_male(x1) & Actor(e1,x3) & v_stand(e1) & (x2 = x3) & n_podium(x2) & n_man(x1))
exists e2 e1 x1 x2 x3 x4 x5 x6 x7 x8 x9.(a_topic(x1) & with(e1,x5) & Theme(e2,x7) & Actor(e2,x6) & v_give(e2) & in(x7,x8) & of(x8,x9) & n_poster(x9) & n_front(x8) & n_presentation(x7) & (x5 = x6) & n_microphone(x5) & behind(e1,x4) & n_laptop(x4) & of(x4,x1) & n_male(x1) & Actor(e1,x3) & v_stand(e1) & (x1 = x3) & at(x1,x2) & n_podium(x2) & n_woman(x1))