A group of people are sitting on a porch.
Friends and family are catching up on old times at home.
Not all groups of people are made of friends and family.  If the group of people have not met before they cannot reminisce.  Just because someone is on the porch it does not mean that they do or have lived at that residence, or that area.
exists e1 x1 x2 x3.(on(e1,x3) & n_porch(x3) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 s1 s2 x1 x2 x3 x4 x5.(at(e1,x5) & n_home(x5) & a_up(s2) & Manner(e1,s2) & on(e1,x4) & n_time(x4) & a_old(s1) & Theme(s1,x4) & Actor(e1,x1) & v_catch(e1) & n_family(x3) & n_friend(x2) & subset_of(x3,x1) & subset_of(x2,x1))