A group of elderly people playing a game of checkers, in a very poor area.
The older people play checkers here every weekend.
Just because people play checkers does not mean they play every weekend.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6.(a_topic(x1) & of(x1,x2) & in(e1,x6) & n_area(x6) & a_poor(s2) & Theme(s2,x6) & r_very(x6) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & of(x4,x5) & n_checkers(x5) & n_game(x4) & (x2 = x3) & n_people(x2) & a_elderly(s1) & Theme(s1,x2) & n_group(x1))
exists s1 x2.(n_people(x2) & r_more(s1) & a_older(s1) & Theme(s1,x2) & all x1.(n_weekend(x1) -> exists e1 s2 x3.(Time(e1,x1) & a_here(s2) & Manner(e1,s2) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_checkers(x3))))