Formally dressed family watching a couple cut a cake.
Family at a wedding.
Just because Formally dressed family watching a couple cut a cake does not mean that they are at a wedding.
exists e2 e1 e3 x1 x2 x3 x4.(Theme(e3,x4) & Actor(e3,x1) & v_cut(e3) & n_cake(x4) & Theme(e2,x3) & Actor(e2,x2) & v_watch(e2) & n_couple(x3) & (x1 = x2) & n_family(x1) & Theme(e1,x1) & v_dress(e1) & r_formally(x1))
exists s1 x1.(ne_nam_family(s1) & a_topic(s1) & at(s1,x1) & n_wedding(x1))