Two men are riding a blue and white jet ski.
the men are friends
Not all pairs of men are friends.
exists e1 s1 s2 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_ski(x2) & of(x2,x3) & n_jet(x3) & a_white(s2) & Theme(s2,x2) & a_blue(s1) & Theme(s1,x2) & n_man(x1) & card_eq_2(x1))
exists p1 x1.(n_man(x1) & exists x2.((x1 = x2) & n_friend(x2)))