A man is taking pictures by the water.
A woman is taking pictures.
A man and woman are not the same gender.
exists e1 x1 x2 x3.(n_water(x3) & by(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_picture(x2) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_picture(x2) & n_woman(x1))