Two moped enthusiasts, one of which is wearing a purse, have a conversation on the curb.
The two enthusiasts are exchanging numbers.
Two moped enthusiasts, one of which is wearing a purse, have a conversation on the curb. does not mean they are  exchanging numbers
exists e2 e1 s1 x1 x2 x3 x4 x5 x6.(n_curb(x4) & Theme(e2,x6) & Actor(e2,x5) & v_wear(e2) & n_purse(x6) & of(x5,x2) & n_one(x5) & Theme(e1,x3) & Actor(e1,x1) & v_have(e1) & on(x3,x4) & n_conversation(x3) & (x1 = x2) & n_enthusiast(x1) & a_moped(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 x1 x2.(n_enthusiast(x1) & card_eq_2(x1) & Theme(e1,x2) & Actor(e1,x1) & v_exchange(e1) & n_number(x2))