Two men on the side of a barge
Two men are near barge.
If something is on the side of something, that means it is located near that thing because you can say you are comparing the locations of the two things.
exists x1 x2 x3.(n_side(x2) & a_topic(x1) & on(x1,x2) & of(x2,x3) & n_barge(x3) & n_man(x1) & card_eq_2(x1))
exists p1 x1.(exists s1 x2.((x1 = x2) & n_barge(x2) & a_near(s1) & Theme(s1,x2)) & n_man(x1) & card_eq_2(x1))