A man striking a ballet pose on a rooftop.
A man is sitting at his computer.
he can't be both striking a ballet pose and sitting at a computer.
exists e1 e2 x1 x2 x3 x4.(on(e2,x4) & n_rooftop(x4) & Actor(e2,x1) & v_pose(e2) & Theme(e1,x3) & Actor(e1,x2) & v_strike(e1) & n_ballet(x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(at(e1,x2) & n_computer(x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_sit(e1) & n_man(x1))