A man and woman getting married.
A man marries his best friend.
We have no idea if the woman is the mans best friend, they could be getting married for a number of reasons.
exists e1 p1 s1 x1 x2 x3.(a_topic(s1) & exists e2.(Theme(e2,x3) & v_marry(e2)) & Topic(e1,p1) & Actor(e1,x3) & v_get(e1) & (s1 = x3) & n_woman(x2) & n_man(x1) & subset_of(x2,s1) & subset_of(x1,s1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_marry(e1) & n_friend(x2) & r_most(s1) & a_good(s1) & Theme(s1,x2) & of(x2,x1) & n_male(x1) & n_man(x1))