A white couple in their 30's dances during a street festival.
A couple are on a porch swing.
If the couple is dancing during a street festival, they cannot also be on a porch swing.
exists s1 x1 x2 x3 x4 x5.(a_topic(x1) & during(x1,x4) & n_festival(x4) & of(x4,x5) & n_street(x5) & in(x1,x3) & n_dance(x3) & of(x3,x2) & n_date(x2) & a_date_day_30(x2) & a_date_day_30(x2) & of(x2,x1) & n_thing(x1) & n_couple(x1) & a_white(s1) & Theme(s1,x1))
exists p1 x1.(exists x2 x3.(on(x1,x2) & n_swing(x2) & of(x2,x3) & n_porch(x3)) & n_couple(x1))