An impromptu toast among friends.
A funeral.
AN IMPROMPTU TOAST IS NOT THE SAME AS A FUNERAL
exists s1 x1 x2.(a_topic(x1) & among(x1,x2) & n_friend(x2) & n_toast(x1) & a_impromptu(s1) & Theme(s1,x1))
exists x1.(a_topic(x1) & n_funeral(x1))